I did a search but couldn't find anything.

I feel so stupid, I was cleaning the tank, and put the lid back on, and did all the clips (the lid has 6 clips on it) but forgot to put the huge book back up there that I use to make sure there's no way she can push her way out (the phone rang and I ran to get it).

So she managed to squeeze out of the tank and on top, and then she fell off! It's about a 4.5 foot drop onto a wood floor.
She didn't seem stunned, and was moving around, and when I picked her up she acted fine, but I am freaking out a little here.

What should I do?