@Barbarapotter if you were my MIL I wouldn't want you in my house either.
Absolutely awful comment.
OP, my MIL was also rather insistent on taking DS1 from me. Thankfully we don't live locally, but when I brought him to meet the family at 10 weeks, she made such a fuss about having him. Luckily he was EBF so I could use this as a déterrant but when DH spoke to her, she decided that he meant I wasn't comfortable with her being around my child. Throw in a few other additional judgements, like she hated the 'newfangled' baby hammock that all DC slept in, had never ever heard of someone carrying their baby in a sling, said I was too attached to my kids, a helicopter mum, was wasting my time making my own baby food, should stop BF after three months (not helped by the fact that SIL FF all of her kids from birth and regularly asked her to take the kids). She also seemed unable to accept that the children were 50% me, and not 100% DH (her PFB). Lots of put downs and judgemental comments to DH about my parenting style. It was an incredibly stressful time for me as I tried to find my feet as a new mum, and despite us being close before DC, I started to dread any visits.
Fast forward a decade, she has never ever had DC overnight, and when we do visit, we meet them for days out. If I didn't organisé these, they wouldn't have any contact at all as DH is a bit useless. I do think that GP are so very important and want them to have a relationship with the kids but that tension from the early days has never ever gone away. I know that they think I am peculiar because we have very different approaches to life in general. That said, I do try to bear in mind that one day I will be a MIL, and so I keep organizing these meetings and smiling... We all make an effort.
OP, this is your baby, and you know what is right. Have faith in this instinct. Your DH needs to back you up. It isn't forever, but right now the baby needs its mum, and you shouldn't be separated if you don't want to be.
@Soontobe60 