Schrodinger's Cat

Connie Derringer- actually, Connemara Fawley, started at Hogwarts School of Witchcraft and Wizardry in 1971. How is it then that she is only 19 years old in 1995? Why choose between the Marauders Era and Golden Trio Era, when magic is involved?***Lifting my wand, I enchant the class list in front of me, sending the names of my students forward until they each glow silver above a seat.“Find the seat below your name,” I announce to shocked faces.“But professor-,” Ron objects until our eyes meet and he backs down.“There will be no changing my mind. I may be younger than most of your professors, but do not get confused. In my classroom, I have the authority. Quickly now,” I grin....People start moving and I relax, confident in my decision.Once they are all settled I take note of what the pairing spell seems to have accomplished.Harry is seated next to a dark haired Slytherin girl. They have both sat as far apart as possible while still seated at the table.Ron sits beside a very handsome black boy with a smug look on his face.Hermione has been seated beside a platinum blond, who I can only assume is the spawn of Lucius Malfoy.***