Train
Delphi stares at the broom like it's done her a personal wrong.
"Alright, listen," she says, half to the inanimate wood silently besting her and half to her own anxiety. "We can do this. We can do anything! It's just a broom, and it's just quidditch. You can do this."
"Up," she mutters, and the broom flies from its place in the shed to the palm of her hand, and she grips it with already-sweating palms.
That's probably not good, right? That can't be safe. I should--
But no. She can't chicken out of this. She's not going to be bested by a damn broom. She's better than that; she's stronger than her fears. She's clever and powerful and resilient, and surely she can figure out how to fly around a damn field well enough to help her girlfriend out!
Delphi feels phenomenally foolish as she mounts the broom; it's so uncomfortable that she almost takes a page out of Luna's book and goes side-saddle, but after Ginny's rant about safety the last time she saw Luna doing it, Delphi knows better than that. Delphi doesn't want to fall.
She knows what she'll have to do if she does.
"This better be worth it," Delphi grumbles as she lets the broom lift her off the ground. She feels absolutely ridiculous, and she can't help thinking back to that time in first year when Snape had refereed one of Harry's games. She'd thought him absurd at the time, and she thinks herself absurd now. Neither one of them is meant to be on a broom, and yet her she goes, rising into the air while pretending she's not scared.
It's going to be worth it, she tells herself, and she's sure it will. If, at least, she sticks to it. Delphi knows herself quite well; if she throws her all into this, she can master it; it's just a matter of investment, practice, and time. She can pull this off if she really wants.
And she's sure she really wants it. She's fantasized about it enough to be certain; she's even had dreams about it. She's pictured it a million times: the look on Ginny's face when Delphi can finally fly with her the way the others can. When Delphi can participate in her favorite hobby and her career, at least a little bit. When Delphi can help her train during the off-season or join her and the boys and her brothers for a pick-up game.
She can't wait to see Ginny light up with joy like that, can't wait to hear what she'll have to say about it. Ginny will tease Delphi a bit over it, she's sure, but that'll be okay; teasing or no teasing, Delphi will have closed a gap between them that's existed for a decade. It'll be the best present she's ever gotten Ginny, surely, and it'll make all of this foolishness worth it.
She's almost sure of that.