DD, just turned 4, has been happily doing wees on the toilet and has been dry at night, for well over a year. However she has never managed a poo on the potty or the toilet, and insists that she can only do them standing up and wearing a nappy, in her favourite corner at home. She doesn't appear to be frightened of the toilet or the idea of pooing, it seems to be more of a positional thing and her not being able to figure out the mechanics of pooing sitting down. She will always have a try on the toilet but then says it is too tricky and asks for a nappy on to go. Up until this point, we have taken the approach of going along with it and hoping that the issue will resolve itself and that one day something will 'click'. We have spoken to the Health Visitor and we have also tried various books, apps, blowing bubbles, fitted toilet seat, footstool etc. Have also been gently saying for the last few months that her nappies are getting far too small now, she is a big girl and needs to do her poos on the toilet, promising her all manner of rewards etc. Have been feeling slightly at my wits end over the whole issue but doing my best to remain calm and very encouraging, reassuring, upbeat etc. Exchanged heated words with DM on Boxing Day who is horrified by the ongoing situation and we took the decision to say that the nappies had been left behind at her house when we returned home after Christmas. DD has now not had a poo since Thursday AM. Saturday and yesterday saw several lengthy trips to the toilet with her trying to go and not getting anywhere. In desperation, I 'remembered' an 'emergency nappy' late last night as was so anxious about her holding it in but still no joy. I actually don't know what to do for the best now. Feeling like world's most terrible parent and have barely slept with worry about it all. Any advice would be very gratefully received.