first she needs two hides... so perhaps you can get another like the first and let her have one on the warm side and one on the cool side.

how long did you leave her alone with the rat? did you stay super still so she couldn't see you... standing a ways back from her enclosure?

if my ball knows i'm there... he refused to eat... so does my rtb. i have to leave the room and come back in 10-15 minutes to make sure they've eaten.