[25f] gf keeps posting my [25f] cleavage on her instagram story without asking

So my gf and I have been together for around a year now.
(To give some background she’s active in the alt scene, i’m not. She also posts a lot on her ig including a lot of sexual ig posts. Personally i dont care for that as it’s pretty much aesthetics, and her instagram isn’t a professional account or anything. I knew this going into the relationship)

This started pretty early on in our relationship where she wanted to post my cleavage on her IG story. I’ve always been reluctant but told her that as long as she asks me first i wouldn’t mind as much. At times where i’ve said no she says she’ll post on her close friends story instead and barely anyone is on it (but idk who’s even on it to begin with). I’ve ended up agreeing mainly i guess to appease her. There’s been a few times i haven’t cared either and let her.

The principle of it though is to ask me.

It’s been a few times now she’ll post close ups of my chest even in gf “appreciation” posts without asking and also just a close up on her close friends story saying she misses me or something.

I’ve already had a conversation or two with her about how i don’t enjoy opening up ig and seeing my boobs basically without knowing they were there. Her response has been serious and saying of course of course she’ll ask the next time etc.

Yesterday i sent her a pic of a hickey she left on my breasts which were visible with my work shirt on (to tell her not to leave any anywhere visible, which i’ve has to remind her as well when it comes to my neck).

She proceeds to post it on her private, without asking me, and writes a caption about how she needs to work on not leaving stuff in a visible spot etc. I only noticed this today as i dont check ig often and will go days sometimes not looking at anyone’s stories.

I sent her a reminder text to not post without asking, but not in a very serious tone and i’m unsure how to go about telling her i basically feel violated. This makes me not want to send her anything anymore or have her post anything anymore

I’m someone with childhood sexual trauma/adult sexual trauma and a low libido which is something we are working around to make work.

TLDR my gf sometimes posts my cleavage on her instagram stories without asking me and i dont know how to express to her how violated i feel, without being a giant hypocrite about it considering i’ve let her in the past.