My (32F) wife (30F) passed away in childbirth about three months ago. Obviously, a sperm donor was involved, but the problem from the start was that neither of us wanted biological children, and intended to adopt
Her mother had always been very adamant that she wanted biological grandchildren, and despite insisting that she wasn't homophobic, was furious when we got married and spent years demanding my wife have a child via sperm donor.
Finally, my wife gave in because she had no health problems and was told it would be a safe pregnancy. Everything was fine until the birth itself.
Because I believe her mother is responsible for her death, I informed her that she would not be told where the funeral is taking place (it was a small, private service, after which I and my brother-in-law scattered her ashes in her favorite place), she would not be invited, and she would be told to leave should she try to show up, and the same goes for her husband.