Our daughter was pretty advanced physically and emotionally with a lot of things. She could walk unassisted at 6 months, speak in full sentences at 1 years old.. But she was not interested in potty training until she was 4.
This was not due to me not trying.. she just could not put it together the feeling of the need to go and going.
She was in day care and seeing all of those little potties lined up and all of the kids going to the potty when they needed, finally clicked with her.
In about 4 days she was totally potty trained. Hardly any accidents and could sleep through the night , no pull ups were needed.
I promise, when she is ready, she is going to let you know.. Until then, you can try, but it is totally dependent on her recognizing the feeling..
Try to put into words what it feels like to need to urinate. Or to have a bowel movement.. Now speak the words to your child.. Do you think you can convey this information? It will take her maturity and body awareness to come together for her to be able to do this.