Since DS (2) was born, MIL has shown little interest in him (despite telling the world and his wife how excited she was when I was pregnant).
I am very close to my own mum and see her regularly, so purposely tried to include MIL in things so that she didn't feel excluded, but she was never really bothered. I always get the impression it's something she feels she should be interested in so sometimes humours you but really she's not that fussed...
DH is very conscious of her lack of interest and advised I back off as I would only upset myself when no relationship was forthcoming.
I am happy with this and leave the contact to DH. He calls her every few weeks (never the other way round) and she makes noises about coming to see us but we have learned not to expect anything...
We haven't seen her since early July and DH phoned her tonight as she has just come back from holiday, she was out and he left a message with DB. When she called back, I happened to pick up and she said
"seeing as you are always soooo busy at the weekend, shall I pop down one evening this week, I haven't seen ds in ages and I really miss him..."
Now this is the bit I find hard to deal with!
The lack of contact is her choice (and frankly her loss) but I don't feel able to bite my tongue when she claims to miss ds or that she doesn't see him as we are so busy. I have lost count of the amount of times we have asked her to come / offered to go and get her / waited in for her when she said she was coming and didn't turn up. She lives a 15 min drive away btw.
I am pretty sure she has a drink problem and this contributes to her sometimes quite selfish and self-pitying behaviour but there is only so much sympathy I have for this...