Wayward Husband. Can deal with this himself. Do not initiate conversation. If he needs you he will come to you. And you need to keep it seperate from your current issues. Do not use this as an excuse to talk R. Validate feelings about MIL. If he brings up R talk do not engage. Change the topic. Do not pursue.
Can you do that the next little while?
Flowers always make people better, happier, and more helpful; they are sunshine, food and medicine for the soul. unconditional love is awesome!