C.S.
Have faith and patience! I've learned there is only one thing 3 yr olds have complete control over...going potty. The worst thing you can do is get into a power struggle with someone who wins by simply saying "no." Like a lot of three year olds, she probably hasn't physically developed enough to know when she has to until it is on it's way out. The more you treat this as a skill she is learning, the easier it will be:) When she does get it into the potty, have a potty party and be her cheerleader! If she does have a poop accident, hand her some wipes and have her help clean herself up, while putting the #2 in the potty. If it is a power struggle, she'll decide sooner or later it's no fun to clean yourself up! Good luck!