It was indeed a shed! I went in to check the girls before bed and Willow was wrapped around her skin all proud. She did a MASSIVE liquid pee with a urate and the tiniest speck of a poop, so I guess she's utilizing most of her food.
Tomorrow is tank clean day for Yzma, and while it's a week early, I may as well do willow's as well and give it a good scrub.
We can check her over too for any retained skin then too. It was all one piece but torn up a bit so I want to make sure none got stuck. We did find eye caps and tail tip though. :)
We must have missed most of the milky eye stage.... or it only lasted a few hours because we check her every day and only saw a slight dullness once. And she only went super pink the day before she shed.