Just tell her NO and exit the conversation... she's an addict.. And she WANTS a fight.. this is all bait for conflict to soften her guilt... exit asap but stand your ground
"As long as you are engaged in infidelity I am afraid I cannot pay any consideration to your moral lectures...
When this affair is over I would be happy to entertain a discussion.. Until such time I don't think you are in a position to lecture me about good conduct...
It's fathers day.. Leave me and my daughter alone..."
