Was fired yesterday due to an allegation from my bully

I posted here last week about my workplace bully. She raised her voice at me and accusing me of twisting her words for my own benefit. I told her that I don’t know why she was so agitated with me and said her tone was unnecessarily aggressive. She then lodged a complaint against me citing that I had a history of micro-aggressions (she’s a black woman and I am a white woman). I knew how charged those conversations could be and was careful, but apparently not careful enough. She cited that I also made a suggestion for us to have a daylong retreat at a black chamber of commerce and apparently asked her if she could get us in. I explained that I did suggest us having the event there and it’s not out of the realm of possibility that I asked if she could get us in, but there must have been more to that because it’s an unhinged thing to straight up ask and I wouldn’t do that. I also said that when she raises her voice at me it’s hard for me to think and I tried to lighten the mood by saying that I also can’t think straight when my daughter yells at me. Well apparently that was me comparing her to my toddler daughter. She went as far as to say that I said I don’t like working with black people which I categorically denied because a) that is not how I feel and b) is a batshit crazy thing to say in the workplace. Well, because I didn’t completely deny the other accusations and simply gave context, they said the claims were substantiated and fired me.

I feel so distraught. I had been bullied for 4 years by someone who had been unnecessarily aggressive towards me and was in a position of power over me. Because I called her out, I lost my job and have been deemed as someone who had been racist in the workplace. Truth be told, it’s not firing me that hurts. What hurts is this accusation because I have spent my entire adult life calling out racism, educating myself, and being an advocate for people. It’s so perverse that it makes me feel sick.

Am I nuts here? I just wish they fired me and said that it’s clear her and I will never get along and letting me go is best for everyone. Why say it was substantiated?