S.M.
Hi, E.. Well, Sweetie, she's not ready if she's not ready to communicate about her bodily functions.
How much does this little girl talk? Does she carry on conversations in full sentences? If you ask her questions, can she give you an answer that you will understand? These are all things to take into account when potty training. She might not understand what you want her to do at all, when it comes to having her warn you about needing to pee or poop.
Some kids have a hard time knowing what they are feeling in their bodies when they are about to pee and poop. Maybe when you have her sit on the potty, you can talk to her about what it feels like. Also, there are special Pull-ups which change color when they are wet, so that the child can get a visual signal when she wets herself.
She's not ready to take responsibility for going to the potty yet. Keep working with her, gently and patiently, and she will eventually get it, but she's not there yet.
Peace,
Syl