WW moved out. Whirlwind of emotions

[reframe]

Thanks guys. The support has been a huge help.

I'm doing pretty well - except when we need to interact.
We talked this morning, and she was all happy, and made a point of telling me about all her travel plans for the coming summer - things she wasn't "able" to do when we were together.

I realize a big part of this is fake - but it's still painful to see her "apparently" doing so well and moving on with a life without me.

Anyway, I have another question for this group.
Over the last 10 years, I've gotten fond of her family, my in laws.
There are two new nieces and nephews on the way this summer.

I'd really like to message W's mother and say something like:
"Thinking of you guys. I'm really sorry I won't be able to come out and see the new babies this summer. Give my love to everyone".

However, I'm pretty sure this would look like "backhanded pursuit" or something to W. Is there any way around this. Any way of reaching out to the MIL without it being about the W?