I'm glad to hear that it is going well and as usual you seem very level-headed in terms of how you are approaching this. Since you have boys, the D19 is probably a new experience for you. I have a D19 and can relate to a lot of the things you are describing here. I do think a lot of this is age and the way girls make that transition from childhood to adulthood. Mine will do great for days on end and the revert to bratty behavior for a bit. I think she just needs time accepting that dad has a life and when she finds her own, she'll be glad of it.