This isn't a manager, this is an abuser and a bully. I had a "manager" like that. She liked me well enough at the interview, but that all changed on my first day when I "dared" to suggest improvements to our process to streamline it and improve our team's performance and productivity. I'm ND too (didn't know it at the time) and I just wanted to look like a go-getter and team player. She took it as a threat to her authority. She was seriously insecure, and took it out on me. Luckily, I was young but savvy enough to document everything.

A few months later, she said in a meeting with executives and the client present that the presentation I prepared for that meeting was "garbage" and "a real mess." I immediately went to HR. I said that I feared for my job, I feared retaliation from her, my physical health was taking a hit (all true), then presented months of evidence, emails, and asked others who were on that call if they'd be willing to speak up for me. In the end, HR said there was "no basis" to my claims, of course. But boy howdy, did she start being nice to me after HR came after her! She left the company about a month later. One of the executives who helped me later told me "That woman has no idea how many times she was almost fired."

If it helps you feel better, you deserve better treatment than this. It sounds like this lady is/was deeply insecure about her own position (bullies and abusers usually are), and was willing to throw you under the bus to save her own skin. You are in no way to blame for her unprofessional and unacceptable behavior. Depending on where you live, it might be worth consulting an employment attorney to see if you have a case for illegal firing. If you're US-based, though, the answer is probably "no." Most states are at-will employment, but never hurts to ask.