Punny name aside, when I was jumping up on the crate and pot next to the wardrobe in the bedroom, I noticed I could jump onto a small bit of empty space right next to the top. When I jumped forward into it, I landed inside the wardrobe. She can walk straight out of it though.
I've also gotten her to stand on top of the wardrobe, making her head go through the ceiling. From there she can also jump right through the room and outside. I think it might be because some parts of the ceiling aren't rendered above the wardrobe, or are and just push you down through it.
A pretty small bug I got when I was just messing around, but still worth posting.