Thanks for the advice. It is a funny story. She's in right now so I may keep her in although she doesn't like it. I live on a hill and I have a plank of wood running off my balcony so Mushroom can get on and off whenever she wants but so do other cats. I can lock my sliding balcony door a couple of inches open so she gets in an out while I'm not here. My vet told me to leave food out all the time and she would only eat what she wanted but the other cats are getting to it too. I've kept her in for a few days but when I let her go out, she doesn't come home at night again. I'll have to work something out.