So girls as the title suggests DD refuses to even sit on the toilet to do a poo. She insists on a nappy. So obviously she knows when she needs to go which I am taking as a positive.
As a very vocal child she won't tell me why she wont sit on the toilet. Forcing the issue doesn't help as she can hold on for days.

So far we have tried to talk to her about it, read books, talk when I do it, rewards chart.

Does anyone have any other ideas? Please help