S.L.
It's common if kids are playing to put off going. More fun to dance around and play. You need to just say, " You need to run to the bathroom now" and see that she goes. I had a son that did that because he couldn't take time out from his busy life to go and he would go outside to play and have accidents once in awhile. I would watch out the door and have to call him in the house to go.