I'm glad the dinner went well w/your h on Friday evening. As long as you don't pressure him, he will be calm. The more he thinks you are putting pressure on him, the more emotional he will get and pull away. I think you've figured that one out...Right?
As for your MIL, go and be civil. You don't have to be distant or rude to the woman. If she asks you questions, answer them politely and do not share much of your personal life w/her. You can share the fact that you are taking French and how much you are enjoying it. Inquire as to what she's been up to and hopefully your time w/her will go rather quickly and you can return home.
There's nothing you can do to fix the son/mother relationship. The best advice is to stay out of it and allow them to figure things out on their own.
Keep the focus on you and your French studies.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
