S.R.
Okay...my daughter was also potty trained at 2. To be trained so young, they are smart. It could be that she is using this to manipulate the situation. She may not want to stay on her mat or sleep there. She gets 1 on 1 attention when she wets her pants. My daughter does something similar. She has her potty break right before nap but then says she has to go several times during nap...and she really does go! They have good bladder control, so even if she is going before nap, she could be saving some up for that 1 on 1 attention she wants. Just a thought!