I wobbled up stairs & went in her room to ask if she wanted water. Not wanting to make a fuss, I had intentionally left the light off in the room & allowed the light from the hallway to filter in. I couldn't really see much, but when I walked up to the crib to ask Pen what was the matter she said, "Poop!" I couldn't see anything, but I did know she wanted to go potty.
FYI: Penelope calls both pee & poop, poop.
So, I grabbed her to take her to the potty to see if she'd be interested in going & LO & BEHOLD!!! She was naked. Aw, shoot. I turned on the bedroom light to discover what she had been up to. She had taken off all of her clothes, grabbed the toy box next to her bed, emptied the box of its contents & PEED IN THE BOX. She didn't get all of her pee in the box, though; It sprayed all over pretty much everything in her crib.
Awesome. Welcome to potty training.