N. S,
First off, get rid of the pull-ups, use them only for naptime/bedtime. Underwear only.
I had trouble w/ the potty training for the longest time, Mika has her occassional accidents here and there, but really, she does better when she's away from me! Sticker chart worked for a while, so you can try that if you haven't already. I also have a gum ball machine that I had filled with M&Ms and jelly beans, she got to put a coin in every time she peed and 2 when she pooped. I just kept praising Mika and telling her how proud I was of her but mainly how proud she should be of herself.
The big thing here, though, is to ditch the pull ups, full time underwear only and let her run around in a t-shirt and undies, it will make it easier for her to get to the potty and go by herself, making her feel more accomplished. Oh yeah, don't ask your daughter "If" she has to go to the bathroom, that was and sometimes is still, my biggest mistake. Just say "it's time to go to the bathroom" and if she fights you, pick her up, take her, pull down the pants and plop her onto the toliet and say "now, please try for me, once you try, you can be done" Remember YOU are the parent and not your daughter. She does not have an opinion or say in the matter right now, that is for you to help her make the right decisions.
Well, good luck!