My Maggie likes to go into the bathroom and then pushes the door shut after herself! The silly little bimbo has locked herself in there all day before. Now, because I am worried that she will do it when I'm at work, or when I'm on call and stuck at work for 24 hours, I just bought a nice heavy wrought iron door stop, to prevent her from closing the door. If worse comes to worst...perhaps you could just leave your closet door cracked open, just in case there's a kitty hidden inside. I'm glad that Peeps appears fine and that you've forgiven yourself. Just reading this thread makes me think that misplacing a kitty is more the rule than the exception!