8 year old daughters butt raw?

My 8 yr old went to poop earlier, she didn't have any problems at all pooping. She mentioned a little while after that her butt felt raw. She did play outside a good while today in the 94 degree heat, she had a bath tonight and after her bath I checked and it was slightly pinkish. Nothing major. Could her being in the heat sweating and then pooped caused it to feel raw? Any ideas what it may be?