Yeee, poor thing! Hopefully she'll be okay. :X I'd like to think BPs are...er..."squishier" than they look seeing as they can wiggle through some tiny holes, hopefully just being squashed for a little bit won't break any bones. My guy did something very similar in his old tank and just about gave me a heart-attack. I heard a banging in the middle of the night and walked over to his tank to find him 1/3rd out of the cage with his head hanging out, looking at me like "What?". There were cage clips on the screen, I still have no idea how he managed to wedge himself through the tiny tiny gap he made himself before he got stuck. I thought for sure he hurt himself, the clips were keeping the screen top down and there was considerable pressure on him. I put him back and observed him for a bit but he seemed completely unfazed and was moving around normally. This was months ago and he's totally fine, hopefully your girl will be as lucky!
...and now the little brat has eight cage clips locking down his lid. Try and get out of THAT! (No please, don't really...)![]()