She hasn't, but she did poop on a plant in the old tub. It was a pothos that wasn't tolerating the heat very well, and hadn't grown any roots. The leaf slowly turned yellow and faded away, though I think me trying to wipe it off didn't help lol. I ended up throwing that plant out, as it just never thrived.
She likes to pee in her hides especially, and I rarely have to go hunting to find it.