She might be ready but just doesnt understand that undies arnt nappies.

DS has been great TT without pants on. He knows when he has to go and if he is naked he is great, not a single accident and he tell sme when he needs to go. We are progressing to wearing just pants. But sometimes with undies on he just kind of forgets that they arnt nappies and thats when we have accidents. Its been a really slow process of getting him to wear clothes and have no accidents. And just this week (one week today) we stopped using a nappy for poo's!! (he is 3 and a bit and we have been doing the TT for about a year now!!!!!)

I would say to try her naked, but honestly, doing that worked yes, but now i have to train him to wear clothes lol so i don't know if thats a good recommendation!! It may be she isnt 100% ready. So just go slow and dont expect too much to start with