My in-laws didn’t know, but I would not have expected them to reach out to me to try to give me comfort. Honestly, I think it’s a bit odd that you expect them to.
Definitely don’t contact them.
Me: 44 H: 44 Kids: 20, 16, 16, and 10 Together/Married: 22 years H announced he was emotionally detached and considering D: 4/4/16 H announced he is going to try to stay and reconnect: 5/1/16