"You've already seen the best I can do!" she snaps, frowning up at Qui-Gon with something much closer to frustration than anger. She gestures sharply with the rock in her hand, just in case there's any question about what she means by "her best."

"Don't act like you think I can do that. We both know I can't."

To be fair, moving so many things isn't something Rey has attempted before. She has no idea if she'd be able to do it. But with her defensiveness already high and her pride freshly wounded, she's in no mood to try anything for the first time in front of a Jedi and potentially humiliate herself even more than she already has. Qui-Gon doesn't know he's being cruel, she's sure, but that almost makes it worse. That just means he doesn't get it.