It's not a cut, it's an ulceration with swelling underneath, and there are now other smaller ulcerations on the ventral side of her legs/feet. The other toad also has a few small ulcerations, and neither is eating now . Doesn't bode well, I don't think. We already removed the bark and replaced it with paper towels for now, plus gave them a hide with moist moss so they can burrow/hide.
Thanks for the reply!