Anonymous wrote:OP here - MIL tends to sulk if we spend a holiday with my family then reject making plans for a few months, she makes comments about access to grandkids yet clearly favors other grandkids, when there have been arguments between DH and siblings she takes sides and isolates us and makes comments implying that I put him up to it or was involved, she generally ignores me and makes contact only through DH, she sends photos about the great and most amazing time they are having during a holiday or other function we aren't attend, she tells us about how her sister's family handles holidays, vacations, etc - everyone all together all the time, and talks about how it used to be before we got married. Other siblings are divorced.
I can't see any favorable outcome from dumping this list of complaints on them. I'd deal with things on a case-by-case basis, only as needed.