K.E.
In my opinion, there isn't anything to "battle" over. Why are you being so trivial? You aren't worried about the 10 year old, you're worried about having control. You need to back off and let her parents do what works for them, she isn't your daughter. You honestly sound very immature, and I can see why your 10 year old is playing sides, (previous post from you) as it sounds like all 3 of the adults in her life are moving targets, and she can't count on ANYONE for any consistency, stability, or security, because you guys are arguing over hygiene issues. My GOD, for the sake of the girl, please figure it out.