I wish they wouldn’t argue

C: My 75 yo partner and my 21 yo daughter with Autism argue after dinner
T: They are going to listen less & less until daughter says something my partner doesn’t like and I will have to hear about it the rest of the night.
F: Fear, dread
A: Told them to stop
R: Frustration, no one learned anything

C: Partner & daughter arguing after dinner
T: They are responsible for their thinking, feeling and actions about their relationship?
F: Loving and calm
A: Do nothing?
R: Let go of the result?

Is now a time for a boundary? If you argue, I will leave the table? I love them both so much.