Rae was freaking out. there was a giant bird in front of her, and it had attacked muse, who had been attempting to give her a pep-talk.
to ease her panic she tought deeply about what muse had said, thinking to herself 'i have to believe'
looking at the bird she took a deep breath, took a second to remember how Zuko did it, and shifted into the starting position for fire-bending, because she was such a nerd she actually knew the starting position for firebending 'i have to believe' she thought again and slowly being to form an image of a small ball of flame going from her hand out as she shifted to the next position 'everyone's in danger, i can do this' she thought. she opened her eyes and changed position, a pitiful fireball spun away from her hand, it didn't even fly far enough to hit the bird. but now she knew she could do it.