H.B.
Wow, my daughter was the same way! She would pee perfectly in the potty but then poo in her pants. I started with having her naked during the am when I knew she needed to go and also implementing REALLY good prizes. She used to get something small and trivial for peeing(in the beginning) and that has phased out, but for the poo IN the potty she got something GREAT for the first 4-5 times. She got a beannie baby of her favorite cartoon (Max and Ruby!) and when she picked the 1st one, she saw that the other one was in the box.... it didn't take long for her to want the other one and go in the potty. Then she got 'cool' dollar store toys to follow, but she loved getting them so much that she was actually grunting and pushing to try to poop EVERY time she would pee. Seriously, she was going a little drop of poop several times a day just to try to get a prize box toy! Well, we slowly reduced the grandeur of the poo prizes to be just a sticker, small book, toothbrush, etc. I don't think prizes should totally end yet, but should now be a surprise and random a few times a week to keep her into it and excited about it, especially if she does well overnight, on an outing or trip etc. My opinion is that if the prize is memorable enough the 1st few times and the excitement of getting something just as great the next time is there, then she will be motivated to make it over this hurdle. Then once the habit is developed of going poo in the potty, you are essentially home free! Keep it exciting, keep positive so there is no negativity associated with poo or potty (or you!) and she will get there. Don't worry and hang on! Maybe also try letting her pick out some special new underwear all by herself that she may feel that she doesn't want to mess them??? Maybe some special kids toilet paper or wipes to use for pooping in the potty? A special new book to look at on the potty? LOL! Just some thoughts....