do you think she is ready? or are you doing it because you think she should be potty trained?
I did Joseph at 25mths and he had it sussed in 3 days- I just stayed on and let him run around with nothing on and kept putting him on the potty (which I kept in the living room) then on day 3 I ventured out for short distances and moved the potty out to the hall and as the week went on I went out for longer and moved the potty up to the toilet. he soon ignored the potty and went to the toilet- after nearly 2 years of being dry he has now sussed standing to wee.

He is still wet at nights. My Pals
DD was later to be dry during the day nearly 2 and 1/2 but sussed day and night at the same time. As you say they are all different.
she sill do it when she is ready. Good luck hun.x