My son went on the potty for the first time on August 21 of last year. At that time, I was in my 7th month being pregnant with #2, I was exstatic! I didn't push it because of the new baby coming along, and we would progress and regress, and many times I would get frustrated. We stopped buying pull ups and put him back in 'baby' diapers and let him lead. If he went, he went. We kept a calendar, more for mom and dad to see and remember. Then, 2 Mondays ago, I prayed "Surprise me, God!" And he was dry (including naps and night!) for 4 days! And he was so upset when he finally had an accident. Now, he's had about an accident a day, but most when he's over stimulated.
Moral of the story, don't push it, but keep it in the forefront of her mind, and it will eventually come. And praise, praise, praise, when she does go. Good luck!