Smudgie
Agree with earlier post from Pascal, you are fortunate to have two houses, make the most of that and retain your independence until these girls have gone to university, college or moved out to live with friends. They sound typical obnoxious teenagers (I think girls are worse at this stage) and hopefully it will pass. If not and they continue to be difficult then you must be patient and wait for the day when you can cheerfully wave them goodbye and shut the door.
I agree with Smudgie's comments above.
Would also add that if they are particularly difficult only when you are there ( do you know anyone else who observes them/ can comment on their usual behaviour ?) then they may indeed be trying to drive a wedge between the two of you out of jealousy/possessiveness ?



