Sister behaving weirdly

[SoReally]

My DM came to me a while ago to tell me my sister was upset, as she claimed I unfollowed her house and lifestyle Instagram account (never did, never followed it in the first place) and she decided to block me on all her social media accounts a while back

I was confused and asked her why, she replied with she deserved a sister who was interested in what she posts and is raising her standards of how she allows other people to treat her. I told her I was confused and didn’t understand why it was a big deal and she told me I was gaslighting her and then asked for some space. Nothing else to the story. I was really upset and puzzled but gave her the space she asked for

She has now unblocked me, she posted a nice picture on Facebook of DN so I commented on it saying it was lovely and noticed my comment had disappeared but everyone else’s comments were still there. I commented the same thing again, it remained there for a few minutes then vanished again. Presumably her deleting it. At first I thought it was my internet playing up but to test it I commented on another friend’s post and there was no issue with that.

She has form for this kind of thing but personality wise she is gregarious and seemingly confident, and extremely socially aware & clever. I get the impression she might be insecure in some ways but just don’t understand her behaviour at all. It’s really hot and cold.

AIBU anywhere?

It would save you a load of bother if you just blocked her yourself.

She sounds like a right muppet, have has little to do with her as possible.

She does sound utterly insufferable and completely self involved.

Take a massive step back OP and just block her. Just because she is your sister it doesn't mean you have to dance to her tune. You can't choose your family and sadly she sounds like an arse,

Thank you I just don’t understand it at all

Have you actually had a face to face conversation with her? it's not that easy just cutting your sister out of your life and it can be triviliased on MN. A sister relationship is something you invest in so try and pin her down and have a proper conversation. For all you know it could signs of ill mental health. Im not saying that it is but try and talk to her properly as it all sounds so odd BEFORE you decide to just block her offf.

Seeing things from her point of view:
She has a hobby that’s important to her and you don’t show interest in it. When you told her you were confused about the problem and asked her to explain she did explain. But you followed that up by telling her you didn’t think it was a big deal. It’s a big deal to her.

If you value your relationship and want to heal it then I agree with PP; have a proper conversation with her. Don’t minimise her interests or feelings. They may not matter to you but they matter to her.
Equally, you she should recognise that by blocking you and talking about you behind your back she hurt you and she should have come to speak to you properly.

If you don’t want to work it out though then shrug it off.

You told her how she feels isn't a big deal

I expect that hurt her

Perhaps be kinder?