I know this may not be what you want to hear, but she isn't ready. I have learned after 2 children that they let you know when they are ready. You can try to convince them and encourage them, but the bottom line is they must be ready and they are the only ones who know that. Doctors can tell you they are ready at a certain point or age, but what they tend to forget is that each child is different, even 2 of your own. I tried and tried to get my daughter to want to be potty trained when she turned 3. She could if she wanted to, but she didn't seem to want to. I thought she was just being difficult, rebellious, maybe something was wrong, I thought all of it. But what I didn't find out until later is they will when they are ready. AND, the more you push them, the less interest they seem to have in it. Of course this is also different with each child. But as soon as I stopped pushing my daughter, BAM, she was then potty trained. BUT with my son, it didin't work that way. The best advice I was ever given is just be patient, there is nothing wrong with them, they will get there when they are ready. Good luck.