K.K.
I am a grandmother of 17 and great grandmother of 2. The whole "bedtime - potty training" thing takes on a life of it's own. Basically you are the one getting caught up in her game. It may be a bit frustrating right now but I have yet to see a child go to college with diapers. It is only a segment of time and will not last long. Just remain calm and don't get frustrated by the bedtime game. Allow enough time for it and make enough notes so you can share when she has children of her own. :-)