I did something important today. Last night I read about gas-lighting, and realized immediately this is what is happening to me at work. What has been happening all year. I made an appointment to see the big boss, and explained my situation, relating it to all the times I have tried to talk to her about it previously, but without being fully able to explain what is happening (which is a result of the gas-lighting behavior in itself). The stages of gas-lighting have been evident in my discussions with her over the course of the year.
She 'got it'. Understands the impact on me. Understands I cannot function under those conditions. I am now on sick leave until proper protections / rearrangements can be put in place so this behavior does not continue. I feel relief.
At the same time I feel like I am 'making it all up'. Making a 'mountain out of a molehill'. 'Being overly sensitive.'
So I'm just sitting with that, as there ain't nothing else to do with it.