The hides are the right size I think, as you described. On her 1st day here I had a large tree shaped hide which had smaller holes in it as well. Come to find out it was an aquarium decor not a hide. She got stuck in one of the small narrow holes, no room for her to double up in order to turn around. Had to cut her out. No doubt that stressed her out. I immediately put black paper around 3 of the walls (outside) to try and make her more secure. I turned the openings to the hides so they weren't facing the front of the tank to further her security hopefully. I will wait to feed as you suggested and will try when she is still in her hide. Before she was always out before dark and back in after it was already light outside so she was already cruising the tank sides when offered the mice. I am trying mice like what she is used to and did warm with a blow dryer and used tongs. I just wanted to be sure I wasn't waiting too long before needing to see a vet to assist feed. I feel a little better now after your advice. Thanks so much!!