What the actual fuck has been going on here?

[Stickitupyourbazooka]

SIL seems to have developed a bitter obsession towards me over the years. I had someone anonymously posting condescending viewpoints on a blog I wrote for some time and when I wrote a new post and limited the audience to a select few, SIL included, low and behold,- the posts came. Often in the early hours of the morning.

I left the family WhatsApp group after being condescended constantly... I said black she said white- every time. But if DH said black then "oh yeh must be black." ILs never batted and eye lid, DH noticed it but shrugged it off.

She then took to my social media recently to challenge a post I shared about mothers being supported to continue professional sports after having children. Telling me how mothers choose to be mothers and their bodies and lives change yada yada, and yet she's constantly getting other people to care for her own baby for her, despite being on maternity leave so I don't actually believe she had the perspective that she was arguing for!

Then more recently, she joined a feminist group online that I was already part of and pretty much as soon as I realised she had joined, I left. She then searched for and went through all of my historical content, screenshotting it and sharing it with family members. What is concerning is that she has claimed that anonymous posts AFTER I left the group must have been written by me! DH has informed me that these posts directly state or imply that DHs family are misogynistic. I think they are (towards me anyway) - but the posts weren't me! And even if they were,, the fact that she identifies herself in them is troubling!

I've had odd experiences of her talking about my weight shortly after having a baby "wow you've lost weight" when I clearly hadn't and was storing extra fat due to breastfeeding. It just made me feel very uncomfortable at the time.

I've had her give DH relationship advice which has hindered him continuing attending therapy for our marriage. He didn't return again and we are verging on separation.

And now she's been sharing my private posts for all to see, claiming some anonymous ones "must" be me- they're not!

Am I some sort of bitter obsession or what because I just feel like this behavior is totally unhinged?

I just want to run for the hills.

Do this asap.

I wouldn’t bother engaging with any of them. I know you’re angry and it really sucks to be accused of something you haven’t done. But ultimately they will all bolster each other up and you’ll be the bad guy no matter what, because that’s how they choose to see you.

Tell them all to fuck off and move on.

I will be moving on now. That's for sure.

Unless DH decides to see the light (in several ways) but that will never happen.

I wonder if you can be quiet for a while? SM seems to have been more heavily a part of your life than it is for most. You take SM very seriously. Some people want to display so much of their lives in order to get validation. You see it all the time on FB - on this date x died posting - followed by lots of random people with their condolences. Slogan and soundbite preaching - earthshatering advice, NOT!
Miss a few days and you have to catch up to all those people who's birthdays you've missed - or do you? Well you feel you ought to, but really, you'd know already, would of sent a card, maybe even seen them IRL if they were that close to you. It all gets a bit daft really.
She can't follow anything you don't want her to, so you have let her follow you and given her the ammo, it's an ego show off.
If you've let your SM stuff be open to the public, there's a reason why you don't make it private when it's easy to do so. You have had your part to play in the creation of this situation, although she's sad in many ways.

When you're in a loveless marriage and isolated because of where you live and the nature of your work, specific, private social media groups can serve as a massive source of support.

Why should I have to avoid social media because of her behaviour?