My crazy unpredictable two year old! (caution graphic story about poo!)

I love her I really do but sometime I just don't get it. Today she was potty training, yeah....well she did great. She peed in the potty and poured it into the big potty and washed her hands all with minimal help from my five year old. Then about twenty minutes later she pooped in the potty without help from anyone, yea!!!! right. Well she didn't wipe her bum, but I was so happy not to be cleaning up chunks of poo from her underwear that I was basically dancing.

She then went potty all by herself about an hour later and afterwards I found her walking around bare bummed. I found her still clean underwear and asked if she wanted help getting it back on. She then proclaimed to me that she wanted to wear a diaper. I was stunned because she has fought me on wearing pull ups at bedtime and at church because she is a big girl. I responded "Don't you want to wear your big girl underwear?"

Apparently that was a big mistake. She started bawling and ran to her room and laid down on her bed....still bare bummed I might add. I went in and asked her what was wrong. She waved an arm at me and said "just go away!". I was saddened and shocked. I mean seriously what had I done to elicit that kind of reaction. I asked if I could lay down next to her and she said "No, just go away!!" So I left the room dumb founded. I came back later and asked if I could lie next to her and read her a story. She reluctantly let me and then just laid there quietly in her bed. I went to go and call somebody....anybody who may have insight into why a two year old may act like this. When I came back she was asleep. I covered up her naked bum with a blanket (said a silent prayer that all the potty trips this morning were enough) turned out the light and came downstairs.

......anyone?