Story Arcs
ARC #1: DELPHI'S CHARACTER DEVELOPMENT
Delphi finds the Mirror of Erised; she sees herself, Draco, and Harry as a Slytherin clique. (Delphi's character development: What is her heart's desire?)
Delphi returns to the Mirror & sees herself becoming a powerful witch thanks to Quirrel's tutelage. (Delphi's character development: What is her heart's desire?)
After Quirrel dies, Delphi looks into the Mirror again; she sees Harry surrounded by his family. (Delphi's character development: What is her heart's desire?)
ARC #2: DELPHI'S RELATIONSHIP WITH SNAPE
Snape gives Delphi detention for defending Harry during that first Potions class. (Stage One: Delphi thinks Snape hates her for befriending Harry.)
Snape accuses her of bullying the Slytherin girls who are actually bullying her. (Stage One: Delphi thinks Snape hates her for befriending Harry.)
He forbids her from sitting at the Gryffindor table. (Stage One: Delphi thinks Snape hates her for befriending Harry.)
Snape tries to get past Fluffy. (Stage Two: Delphi thinks Snape is working for Voldemort.)
Snape threatens and stalks Quirrel. (Stage Two: Delphi thinks Snape is working for Voldemort.)
Snape "tries to kill Harry" during the Quidditch game. (Stage Two: Delphi thinks Snape is working for Voldemort.)
Snape catches Delphi with Dark Arts books that Quirrel gave her. (Stage Three: Snape actually thinks Delphi is a threat to Harry.)
Snape catches Delphi getting revenge on her bullies. (Stage Three: Snape actually thinks Delphi is a threat to Harry.)
Snape discovers that Delphi knows about Fluffy. (Stage Three: Snape actually thinks Delphi is a threat to Harry.)
ARC #3: DELPHI'S RELATIONSHIP WITH THE OTHER SLYTHERIN GIRLS
Delphi rejects Pansy; Daphne and Tracey approve. (Stage One: The other Slytherin girls don't know what to make of Delphi.)
Daphne asks what Delphi's doing with Harry Potter; Delphi stays vague. (Stage One: The other Slytherin girls don't know what to make of Delphi.)
Lily Moon doesn't want Delphi's friendship; she's creepy and vague about why. (Stage One: The other Slytherin girls don't know what to make of Delphi.)
Pansy and Millicent pick a fight in the owlery. (Stage Two: The other Slytherin girls hate and bully Delphi.)
Someone goes through Delphi's stuff. (She thinks it's the girls; it was Snape the prefect.) (Stage Two: The other Slytherin girls hate and bully Delphi.)
Delphi is kicked out of the common room and dorms. (Stage Two: The other Slytherin girls hate and bully Delphi.)
Delphi gets her revenge on the bullies to scare them into letting her back into the dorm. (Stage Three: The other Slytherin girls are scared of her and leave her alone.)
After the showdown with Voldemort, the girls pick a fight with Delphi about being a traitor. She turns the tables on them; if she can fight Voldemort, what exactly do they think they're going to do to her? (Stage Three: The other Slytherin girls are scared of her and leave her alone.)
Lily Moon offers Delphi an odd little prophecy. (Stage Three: The other Slytherin girls are scared of her and leave her alone.)
ARC #4: DELPHI'S RELATIONSHIP WITH QUIRRELL(MORT)
Delphi meets Quirrell in Diagon Alley. He's weird and kind of pathetic. (Stage One: Delphi is cautious about Quirrell.)
Quirrell gives Delphi a book. She's suspicious, and she doesn't read it right away. (Stage One: Delphi is cautious about Quirrell.)
Delphi returns to Quirrel for more. She's at least willing to give him a chance. (Stage One: Delphi is cautious about Quirrell.)
Delphi reads everything Quirrel gives her for months. (Stage Two: Delphi allows Quirrel to mentor her.)
Quirrel offers her private lessons. She's willing to risk it. (Stage Two: Delphi allows Quirrel to mentor her.)
Quirrel teaches her how to Confund someone so they're open to suggestion. (Stage Two: Delphi allows Quirrel to mentor her.)
Quirrel goes on a spiel about Soul magic being the most powerful and taboo Dark magic. He vaguely alludes to the creation of Dementors and the process of creating a Horcrux. He mentions the Patronus as Light Soul magic but refuses to teach it to Delphi when she asks. She says she wants to see this external representation of her soul and what animal form it would take. He assures her that hers would be a serpent of some kind; suddenly wary, she asks him why he thinks so, and he reveals that he knows she's a Parselmouth. Thoroughly spooked, she gets the hell out of there. (In other words, Quirrell knows too much and Delphi gets spooked.) (Stage Three: Delphi is suspicious and wary of Quirrell.)
After Quirrell dies, Voldemort tries possessing Delphi. (Stage Three: Delphi is suspicious and wary of Quirrell.)
Delphi decides that she can still be Voldemort's enemy while using the tools he gave her. She keeps her books. (Stage Three: Delphi is suspicious and wary of Quirrell.)
ARC #5: DELPHI'S RELATIONSHIP WITH HER FAMILY
Delphi's relationship with Madame Lestrange is the weak link in her relationship with her family. Lestrange clearly doesn't even see her as a person so much as a tool. (Stage One: At first, Delphi gets along—for the most part—with her family.)
Delphi loves Lucius and Narcissa. Lucius is indulgent, protective, and proud, and Narcissa is motherly... ish. (Stage One: At first, Delphi gets along—for the most part—with her family.)
Delphi and Draco are best friends, going so far as to make a friendly wager about Harry Potter. (Stage One: At first, Delphi gets along—for the most part—with her family.)
Delphi doesn't confide in Narcissa. (Stage Two: Delphi starts to pull away from her family.)
Delphi doesn't respond to Narcissa's second letter. (Stage Two: Delphi starts to pull away from her family.)
Delphi and Draco denounce their friendship. (Stage Two: Delphi starts to pull away from her family.)
Madame Lestrange sends her a Howler. (Stage Three: Delphi firmly plants herself against the Malfoys—politically, at the very least.)
Snape bullies Delphi into having Christmas dinner with the Malfoys (thanks to Narcissa's manipulations). (Stage Three: Delphi firmly plants herself against the Malfoys—politically, at the very least.)
After the climax, Draco explicitly declares Delphi an enemy. (Stage Three: Delphi firmly plants herself against the Malfoys—politically, at the very least.)
ARC #6: DELPHI'S RELATIONSHIP WITH HARRY
Delphi (and Draco) meets Harry at Madam Malkin's. (Stage One: Harry is uncertain about Delphi.)
Delphi makes lets Harry (and Ron) join her on the train. (Stage One: Harry is uncertain about Delphi.)
Delphi stands up to Snape for Harry. (Stage One: Harry is uncertain about Delphi.)
Delphi realizes that while Harry and Ron now welcome her presence, they also don't try to hang out with her. (Stage Two: Delphi and Harry are friends, but they're not close.)
Delphi sits with them at the Gryffindor table, but she's not welcome in the common room. (Stage Two: Delphi and Harry are friends, but they're not close.)
Delphi can't bring herself to confide in Harry when she gets chased out of her dorm. (Stage Two: Delphi and Harry are friends, but they're not close.)
Harry confides in Delphi what he saw in the Mirror of Erised; she confesses that she can't go back to her dorm. (Stage Three: Delphi becomes close friends with Harry.)
Delphi joins the trio on their quest to protect the Stone. (Stage Three: Delphi becomes close friends with Harry.)
Harry and Delphi have a heart-to-heart (implied to be prompted by Dumbledore). (Stage Three: Delphi becomes close friends with Harry.)
ARC #7: DELPHI'S RELATIONSHIP WITH HERMIONE
Delphi and Hermione make mutual bad first impressions on one another during the train ride. (Stage One: Delphi and Hermione don't get along.)
Delphi jokes (well, mostly) about sitting at the Gryffindor table. Hermione's an ass about it. (Stage One: Delphi and Hermione don't get along.)
Delphi and Hermione are academic rivals. (Stage One: Delphi and Hermione don't get along.)
Delphi approaches Hermione; they have a lot in common and both need a friend. (Stage Two: Delphi & Hermione have an insecure friendship.)
Delphi is trying to comfort Hermione when the troll bursts in. (Stage Two: Delphi & Hermione have an insecure friendship.)
Delphi joins the trio at the Gryffindor table. (Stage Two: Delphi & Hermione have an insecure friendship.)
Delphi confides in Hermione that she was chased out of her dorm. (Stage Three: Delphi & Hermione become best friends.)
Hermione tries to sneak Delphi into her dorm; they get thwarted. (Stage Three: Delphi & Hermione become best friends.)
Hermione low-key helps Delphi get revenge on her bullies. (Stage Three: Delphi & Hermione become best friends.)
ARC #8: DELPHI & THE CANON PLOT
Delphi wanders the school. She investigates the forbidden corridor and discovers Fluffy. (Act I: Collecting Clues)
Delphi gets a weird Christmas gift from Hagrid: a handmade flute. She's baffled. (Act I: Collecting Clues)
Harry tells Delphi about the Invisibility Cloak, the Mirror of Erised, and his own flute. (Act I: Collecting Clues)
Harry and Delphi are confronted by Dumbledore. He explains how the Mirror works and mentions Flamel. (Act I: Collecting Clues)
Delphi asks Hagrid about the flutes. His mention of Dumbledore confirms that something is definitely going on. (Act II: Delphi's Suspicions)
Delphi deftly dodges the shit with the dragon. (Act II: Delphi's Suspicions)
Delphi averts Draco's attempt to interfere with Norbert. (Act II: Delphi's Suspicions)
Delphi convinces the trio to investigate her theory about Fluffy and the Flute. (Act II: Delphi's Suspicions)
Delphi, Harry, Ron, Hermione, Neville, and Draco have detention with Hagrid in the Forbidden Forest. They run into Voldemort, and Firenze drops some knowledge on them. (Act II: Delphi's Suspicions)
Harry realizes that Voldemort's ally knows about Fluffy's weakness. (And Dumbledore's fucking gone!) (Act III: Showdown with Voldemort)
Harry, Delphi, Ron, and Hermione descend into "the underworld" to face Voldemort. (Act III: Showdown with Voldemort)
After the climax with Voldemort, Delphi and Dumbledore have a conversation. (Act III: Showdown with Voldemort)
The end-of-year feast is bittersweet. (Act III: Showdown with Voldemort)