My 12 yr old daughter is still soiling her underwear, she tells us that she does not know that she needs to go to the bathroom. I think she's lying. She is constipated and probably goes to the bathroom to poo when her tummy is really sore and all that stuff needs to get out. But she has a hard time pushing it out and is always crying out loud in the toilet. I'm wondering whether she's just lazy or whether there's a medical problem with her colons.