Potty Trained 3 year Old Pooping in Panties Delibritly

My 3 year old step daughter is completly potty trained and has been for almost a year. But recently, shes just too busy playing or whatever to go to the bathroom. She doesnt normally pee in her panties but she poops in her panties. You can tell that she actually has to push to get the turds out because of the way the texture is. I have tried everything including the corner, talking, telling her is gross, throwing away her panties, putting her back in a diaper. She knows that its not right and that she needs to poop in the tiolet, she just wont. Her mother doesnt do anything as far a disipline when it comes to this. Im not sure what to do. Anyone have any suggestions?

[specialmom]

I've heard this story from my friends that also had their children potty trained early.  They regress a little.  You probably shouldn't punish her for it and try not to shame her.  I agree with her mother.  I agree it is frustrating, but she is still little.  She probably doesn't love it either.  Is she a little constipated---  this is a big reason little kids don't like to poop on the potty.  If so, usually some juice helps that.   Does she have any regular time she goes?  (both of my sons go around the same time with one kind of being like clockwork-----  made it easy to get them on the potty when it was about that time.)  

I'd say to remind her many times a day.  Over and over again, so that if you ask at or around the time it is starting to feel like she has to go----  she'll say, okay and get on the potty.  Other than that, leave her butt naked when she is home so that she gets back in the habit of going on the potty for the deed.
Try not to be too hard on her though-----  she's little and learning.  Good luck.  

[Sunnytuna]

The mother of the child is right not to make this into a discipline issue. It's very, very rare that a 3  year old is completely potty trained with bowel movements. They usually need help with reminders, a schedule (put on pot every night after dinner), and a good diet. Need big rewards and strokes when they do it on the  pot. I know some 9 year olds that still need reminders so they don't get constipated! Try to be kind during the mistakes. Just do the clean-up with minimal fuss. Save the big discussions and big rewards for when she does it right!