be in bed when she gets home. or better yet how do your exchanges usualy go? do you ignor her taunts and walk away. then yes either dont be awake ( wink wink) when she comes how or say something to the effect " I had fun with you tonight i hope you had fun to good night sleep well" and sound like you mean it. disarm her completly. your more active then ignoring which it sound like is wearing on ya but you are still deflecting any hostil act.