Well done to you for standing up for yourself. I'm sorry they were so toxic you were driven to try to hurt yourself and thankfully your DH is there taking care of you. Have you had counselling for self-harm before? If not, it may help to give you more coping skills for when you're feeling vulnerable.

I was once in a job for about 18 months. I was early 20's, with little self-confidence. I worked my butt off for this small family business, researching and creating advertising programs, driving around the country signing people up, working long hours. Nearly fell asleep driving. I was so depressed, I thought I was unemployable. One day I had a long lunch, after spending 3 weeks on the road for 6 day weeks. My boss reemed out for it and I blamed myself for being a bad worker. It wasn't until I talked to a recruitment consultant about my CV & experience that I realised I WAS employable and I went back to work and quit.

No job, company or work colleague is worth your health. I imagine if it was your DH in your place, you'd be giving him the same advice he gave you - it's NOT your fault.

Let go about the audit - they created this mess. It's not your problem. And you will get another job - you'll just know faster in future to get out if it's toxic.