M.E.
I've heard boys and girls are different but I just went through this (in the last month) with my son. He's 2 1/2 (3 in August). We've been trying since he turned 2 to potty train him. My family has been on me quite a bit b/c they thought he should be potty trained by now. I was getting ready to have a baby and didn't want to push it too much b/c I thought he'd regress once the baby got here.
He could have cared less if he pee'd or pooped in his diaper or pull up. He'd go hide, bring me a diaper, etc. He knew full well what he was doing. He just had no interest in going on the potty. He didn't even want to put on his big boy underwear, he told me he wanted diapers. Well, about 3 weeks ago I got determined and took him to pick out his own underwear. When we got home he still didn't want to wear them, the next day I got them on him and told him to tell me when he had to go and DON'T go in your underwear and he'd get baseball candy if he went in the potty. Well, of course he went in his underwear but he didn't like it. So we put on another pair. He only had 5 accidents over 4 days (2 pees and 3 poops). After that he just decided on his own that he wanted to use the potty. He even started going by himself without having to tell me by the 2nd day. The moral of my story is when we pushed him he didn't care about it but one day he just caught on to what he was supposed to do. When she's ready she'll do it. Just keep reminding her but don't act frustrated. Once she gets motivated she'll do it.