id wait a good week b4 trying to feed her again she might be stressed out from all the time trying to feed .. wait about a week dont offer nothing and dont handle her .. get a live prey and drop it in her hut then close the lid keep the room dark step back and keep a eye just to make sure the prey dont hurt her if u want shake the box up a bit so the prey gets dizzy then drop it in also u can leave the box on top of her hut for a while so the smell of the rodent gets her going then open drop close and watch ... and i wouldnt use a gerbil id use a big mouse or a small rat something she would feel confident striking and something that wont hurt her