As the title suggests, I started a new job about 4 months ago and I'm doing well, aside from one thing - dealing with a workplace narcissist. That's what I see her as, anyway - and I've dealt with enough pathological types to know one when I see one. It's the little things that add up, along with a lifetime of specific trauma connected to these people, that makes this an issue for me. Most people would be able to go home and rant to a loved one, perhaps get advice, but I can't! So I'm posting here to see if anyone's dealt with the same situation.
When I started this job, I noticed a culture wherein one person - the titular narcissist - was the reigning queen of the office, allowed to flaunt herself and break rules when she saw fit. There are other malicious types in the office but they're older and less offensive; mostly just bitchy and gossipy, overly concerned with their personal rivalry, which is more funny than scary. However, the head narcissist is a younger woman, close to my age, and the baby of the entire department. She regularly flirts with the external (male) staff, has personal contact numbers for half of them (despite our very privacy-aware industry), and sucks up to the manager whenever she's around. On a personal level, she's sweet and light with everyone but me.
I don't know what I did to upset her, but from Day 1 she's been cruel and patronising to me, regularly invading my space, cutting me off when I speak, mocking the way I speak, and rushing everything she says so I don't get a chance to answer back. She also hides my things, and I suspect takes other peoples' personal items, and is generally rude in a way that's very hard to fight back against without becoming 'the problem'. An example of this was handing around biscuits she got as a gift, skipping past me with a snide comment of "ooh sorry, you can't eat these can you?" (I'm allergic to dairy, and they actually had no milk in) and emphasizing how good they tasted to a nearby colleague. Despite changing departments she comes back to ours every day, either to charm my colleagues or assign me grunt work (filing, printing) despite the fact I've taken on greater responsibilities now. The atmosphere totally changes when she leaves, with colleagues who were previously dismissive or hostile warming up to me and encouraging my progress.
I suspect I feel so irritated because I've dealt with similar people many times, and now I have more self-esteem I don't feel I ought to deal with childish dominance plays like this. My C-PTSD also makes me more nervous, sending me into fight/flight when she's around. It sucks and makes me feel pathetic, plus I'm quiet, awkward and introverted so I suspect my colleagues can be easily turned against me by someone more charismatic. Also, I don't know how to deal with this. If I go to my manager even suggesting she's being a bully, I will be gaslit or made to seem dramatic, even though my manager's a good egg and stands up for me. I would usually be sarcastic and tell her politely to stop acting like my manager, but can't do that either - my reputation will tank, and I'll become 'the arrogant, jealous one'. The whole workplace has an 'it is what it is' attitude, and you're expected to take the 'banter' until you can't. So what do I even do??? I don't fancy changing jobs at least until I've passed probation in two months, and my CV isn't great so I'd rather not challenge an already horrible job market - I was unemployed for a year before this and it crippled me financially.