Ok, I think that is taking a huge assumption (and yes I do understand that you know the background). My MIL was the MIL from hell when DD1 was first born, I dug my heels in at everything and guess what it made it worse. MIL just wanted something to do with her first grandchild, admittedly she really went the wrong way about it, but she did have the right intentions. I understand your statement, as I have been there myself and I can still remember the strong feelings I had during those times. Every suggestion, every thing that want to do is perceived as an attack. In the long run it is just plain not healthy for all involved
In the end I realised it was not working and going to get worse. I chose to give in on an area which really did not matter in the scheme of things, but would make her feel good. She loved to knit, so I asked her to knit some things for DD1. She was honoured, got to feel a part of things and I got DD1 got some nice clothing. It was a win/win situation. Things improved from there. It gave is something to talk about and from there led onto other conversations. MIL is still not perfect, but she had backed off on a lot of issues.
I think giving in on something "safe", can be a good testing ground to see how they really are. If it all goes to hell, then you have some ammunition "see, I let them have the bank account".

