I don't know how he got in the toilet to begin with, but what if she hadn't seen him and had sat down? It could have jumped right up on her hoohah! She may never use that toilet again!
First a frog in the bathroom, then a dinner guest. Look who was sitting on my dining room chair when we sat down to dinner last night; a lizard!
Ahhh, the joys of Florida living...you just never know what kind of critter you'll see next!