I don't know the whole dynamic here, but I agree with Kett here. I think it is good to trust your H to handle this. He has been doing many things right and this is a sticky situation for him. He needs to try to smooth things over with MIL. He may think that engaging her on her terms is the best way to do it (note: I didn't say he is right, I don't know). But, I am guessing he is doing it with the best intentions. Let him try it his way, it is his mother.
