My MIL has her good points, but it is all done to her agenda, never dh's, or mine, or our kids.
Biggest example - I was 35 weeks pg with dc3 when dh'd Grandma (MILs mother) died aged 90 after a long illness. I had had a ghastly pregnancy, 10 hospitalisations (I think - I lost count!), and was about to be transferred from our small rural hospital to a large teaching hospital as I had gone into prem labor, which they managed to stop, thank goodness!
When Grandma died, MIL was on the phone to dh, insisting that he went immediately several hundred miles away to help her with funeral arrangements, clearing out the house etc.
I was in hospital and could have given birth at any moment! We had 2 other dcs to consider. Yet MIl thought she took priority.
Dd2 was born 2 weeks later, and MIL turned up (all of a sudden able to do things liek arrange transport for a long trip etc) and expected to be treated like an hounoured guest.
Any time we have had issues with her (and I suspect that one of my threads was part of the trigger for this one - she left my daughters unattended in ehr house last weekend) it immediately turns into "but why are you being so horrible to me" or "you don't appreciate me".
Me me me me me.
I do appreciate that some people have to cope without mothers in law and that this can be hard, emotional, difficult.
But some mothers cannot let go of their sons, and my MIL hs a very hard time recognising that dh has other priorities apart from her - me, the children etc ....