OMG, i covered the ex-pen with heavy grade cardboard before i left. i come back a few hours later and she's out again!!! she's not opening the door, it's still closed (not to mention it would be impossible), but i cannot for the life of me figure out how she's getting out!!! the metal bars are too close together for her to slide through, WTHeezy?!? HOW is she accomplishing this?!? we need to get her a paying gig....