6 year old has started pooping her pants and hiding it; never had an issue with bedwetting, etc before.

Hi all! Asking this for a friend. Her 6 year old, who toilet trained flawlessly, never wet her bed etc has on an almost daily basis started pooping her pants and hiding it. When confronted, she gets super embarrassed (even though asked about it in a very loving and open way) and blames it on her teacher not letting her go to the bathroom when at school. However, yesterday she did it at home and tried to hide it again. We're wondering if any of you have any experience with something like this? We're thinking part of it must be mental/emotional as opposed to physical. She is also a co-parent and doesn't have her kids on the weekends. Any insights would be appreciated. Thank you! via /r/Parenting http://ift.tt/2t2kZ9r