First, try not to get too frustrated. My almost-5-yr-old son potty trained just fine for peeing, but was almost 4 before he would poopy on the pot, whether it was a full size toilet, or a potty chair. It may be that your daughter just isn't ready physically, maturity-wise, or she's just stubborn. One of our doctors suggested sitting the child on the toilet approximately 10 minutes after each meal, then setting a timer for 10 minutes. She must understand that she must sit there for the full ten minutes, as this is the amount of time that studies have shown will condition her body to respond by evacuating the bowels. Once the timer goes off, she gets to pull a bagged treat from a basket that is in plain view of the toilet, but out of reach. The doctor recommended getting 20 days worth of dollar store prizes or perhaps treats, individually wrapped or in paper bags. As long as she sits for the entire 10 minutes, she gets a prize whether she "goes" or not. After 20 days, her body should be conditioned whether she wants it to be or not. Then you can simply make sure she goes to the toilet after each meal, and she should be close to fully trained. Give it a try...it worked for us!!