I'm sorry your PTSD was triggered. I don't have PTSD and I don't think my mom does either. However, she is bipolar, and when she is manic she does blow things out of proportion and can yell at me and be mean. For a while I thought of cutting her out of my life entirely, but now I am trying to understand that it is her illness talking. When she is stable on her medication, she can be reasonable.

Anyway, I don't know if medication would work for you or not, but I am sorry things are so bad. Is there anyway you can walk away from the situation for a while and try to regain self-control? In that situation (for example) could you have said you needed to go to the bathroom and step away from the table for a while? I don't know if that would help or not. It's just a suggestion.