I'm so sorry that happened to you. I'm thankful that my mom has never been threatening like that, but I can imagine how horrible that feels. I think that you did the completely right thing in not responding. I feel like a response would just reinforce that threats will get the reaction she wants, which is a terrifying thing to think about.
When is enough enough to finally decide to go NC?
Unfortunately, no one can decide that except you. I chose to go no contact because the thought of interacting with my mom after her latest eruption made me physically ill. I couldn't eat without extreme nausea for about a week and lost 5 pounds when my H insisted that I at least give myself a mental break so that I could heal and start living normally. My T completely agreed with that approach because of how toxic the relationship had become to me. I still have no idea when or how to regain contact in the future, but I feel very confident that this has been the right course for me. Some things that you might think about are:
1) Is your relationship with her negatively affecting your nuclear family?
2) Is the relationship negatively affecting your quality of life?
3) Is your continued relationship with her actually helping or hurting her?
Beyond that, it is your call to make. Something that really helped me was the discussion with my T about how no contact doesn't have to be forever. It can be for however long I choose based upon growth and progress. It might be forever; it might be 6 months. But at the end of the day, it is my choice. And realistically, you have much more power in this relationship than you feel like you have. Best wishes!
