If you think MIL is probing for info in a D, I'd let her know that I wan't interested in talking about my life with her. Of course, I've gotten along with my MIL over the years, but mostly through my efforts. I get along with her better than H does, so that's not a problem for me (ticking her off and having to listen to him about it anyways).

Whe do you think he'll file when his folks come out?