I gently asked if she'd sit on the potty.
The approach that worked for my kids was for me to sound very confident that it was time to use the potty. Kids have anxiety about using the potty and if you sound like you are unsure then they interpret that as "maybe I can't do this."
What I did was set a timer and when it went off I would announce that it was time for potty practice. That means that the child sits on the potty for a few minutes while you read a story. If the child produces something in the potty--great! Give lots of praise. If not, praise her for practicing.
Gradually increase the number of times you practice until your child has had many successes. At some point, you will need to switch to underwear and explain that she is getting very good at using the potty and now that you and your child both know that she
can go on the potty, it would be a lot better than diapers/pullups to go on the potty all the time.
When there is an accident, don't go back to diapers/pullups. Show your child that you are confident in her ability to do this even if there are a few mistakes.
