Since that's her "current" nick name, I agree, let's go with that. No need to re-invent the wheel. If she's cool with it , so am I.
If we (and her new teammates) call her by a name she beings with her from Fairfield, that will make her feel more at home, and more importantly, that she is accepted as one of them. If you call me
"Chica", you accept me as I am, and as the baller it says I am. Think about it.
I know BY'ers like to give new players a nick name. I'm more comfortable with allowing her teammates to give her a moniker than trying to be creative and come up with one myself. It's hard to give someone you don't know and have never met a nick name.
A nick name is not valid unless it sticks. I remember when Christian Williams was a freshman. Several names was suggested by yarders, none of which stuck. Her teammates gave her the nick name of "squeaks." THAT one stuck.