it si NOT even possible until some hormone kicks in so they produce less wee at night time anyway...
the fact that your daughter HAS been dry is a good sign that this must have happened.
therefor get lots of bed sheets etc
and explain that she is abig girl and you are going to try and see what happens without a nappy!
give her a good week and see what happens. If she has ANY success keep going, but if shes wet everynight AND unhappy about it then maybe think again!
but you will (hopefully) find that she does have 1 or 2 (maybe more) Drynights
I would say for the first few nights make bed
waterproof sheet, under sheet, either waterproof sheet or bed mat, undersheet.
so if she does have an accident you can strip off the top layer and it can all be dealt with QUICKLY in the middle of the night!