OK. The most important thing is to be consistent and follow through. If she isn't doing that then it is her fault that the kid wont use the potty. When I decided to potty train my two kids it was a lot of work for less than a month...then it was over. My daughter was completely trained before she was 18 months.
The thing that worked best for her was this. She got to pick out the panties that she wore...at the store and every morning and after her bath. If she went to the potty we sang and danced and made a really big deal out of it. If she pooped in her panties SHE had to throw them away.(of course since im not rich I would get them out and wash them but she never knew a thing)
It took less than 2 weeks.
My son was a lot harder. I had to bribe him. We did 1 cookie everytime he peed and 3 cookies everytime he pooped. Even though I had to pay up I still made a big deal out of it. We sang and danced. Praise is the answer to stubborn children.
I hope this helps....she MUST be CONSISTENT!!!!!!!!
Oh yeah, My daughter hates the bathroom(don't know why) so I put her potty chair in a central room in the house. They say that if you put it where they have to see it then it makes it easier...