K.Y.
If you are thinking: hey, she made it all night dry in her pull-up (or panty-diapers, as we call them here), then
possibly she is subconsciously afraid that she will wet the bed, so she keeps waking up to pee.
She will gain confidence and grow out of it- getting up at night with kids is all part of being a mommy I guess- my oldest is 18, and now I have 3 under the age of 3 (one is daytime potty trained) and I am doing it all over again myself. But even at like 9 years old, they will wake you up with tummy aches, bad dreams, etc..