OP I think you need to work on your boundaries.
what you are doing is fine, your husband is happy to do it.
you cannot control your MIL’s feelings and reactions about it.
you sound like you want to solve or fix her.
you won’t be able to, it would be a mistake to try.
you are however responsible for your own reactions to HER
i suggest you:
- give her time
- get your husband to point out how she’s being unreasonable
- perhaps offer one conversation yourself
then move. Think about what pattern of visiting would work for you? Day trip or overnight? Are you willing to always go ‘back’ to Kent or do you want to (try) to set a pattern where you take it in turns and she comes to your new place every other time?
when you move, set expectations step by step (so don’t say we’ll
come every month unless you are sure you can stick to that) say we’ll
visit for X event, or invite you for Y
try some things out and settle into a pattern. Be consistent and ignore her emotional blackmail.
my PILS try to be controlling. They are not British don’t live in the U.K. and don’t speak much English (DH move here aged 20 to escape them!).
they have tried all sorts since we had DC. Being firm in what we would do and want we wouldn’t and ignoring all their noise has been a study on how effective that can be.
10 years in we have patterns that work for us, and they have calmed down and settled into them as we and DC have decent time when we are together. They have a much better relationship with DC now than if we’d given in to their pressures.
you can’t make her like your choices. You can stand firm and carry on regardless, including detaching your own need to have her accept or approve of what you are choosing