((((((((((kd))))))))))

I think you need to let your future sil know what happened and what you heard. Mostly, for your daughter's sake. There is obviously going to be some tension for you around him and your daughter is going to pick up on it. Being upfront with him will let him decide how to deal with things...and make him more aware of his actions.

If I were your daughter, I would want to be kept out of it as much as possible because being in the middle of a spouse and a parent is hard.

Good luck to you. PM me if you need anything. You're in my thoughts.