A.Z.
HI A.,
Have you tried talking to her about why she won't go potty? Sometimes they are afraid they are literally losing a part of themselves since they cannot distinguish the fact that they are getting rid of waste. All they know is that they went potty and now they are supposed to flush away a part of themselves. If they understand it is body waste and something they do not want or need, it can alleviate fear and anxiety regarding going to the bathroom on a toilet or potty.
I also have an article on potty training on my website that offers a lot of advice as well.
http://www.punkinbutt.com/article_info.php?articles_id=24
Sincerely,
A.