You are flustered with a situation that has not responded to less drastic attempts at handling it. I'm sure you didn't make this decision lightly. And I believe there had to be a lot of miserable experiences that pushed you into it.

You remind me a bit of me. Out of frustration, I've sometimes gone to drastic lengths to resolve something. I was told once that I had an all or nothing mentality. The person had a point, but was not entirely fair. The challenge is to get the right boundaries in place. Boundaries that only work, if others respect them, are not boundaries. They're wishful thinking.

It's okay to start from where you are at. A goal might be to roll back the defences to something a bit less draconian. I don't know what havoc your mom has wreaked on your life. Cut ties might actually be all that works. But there's a chance something less total could work, as you build more skill in putting effective defences in place. A lot of the upset that a connection to someone causes us is actually due to our own responses. Sometimes we react when we could choose to not react.

I don't suggest there is some pat formula to solve the problem. Just be open to the option of reconfiguring your defence strategy. As you gain experience in life, new strategies will occur to you. But for right now, where you are at is just fine.

It's unlikely your mother will change who she is. But you are going in the right direction by changing her access to you. That's all you can control. Sorry if I sound vague.

I don't doubt that your mom brought this on herself. You sound like a reasonable person. While you are at a safe distance away from her antics, spend some time considering this: The way your mom acts is probably the only way she knows how to be. She probably is the product of some major dysfunction in her own family of origin. That's not a reason to tolerate bad behavior. If anything, she very much needs limits set on what you will put up with. It is like dealing with a child. You can't indulge what you want to discourage. But you have more options in terms of a variety of possible responses than you now realize.

You made a big change. You can fine tune it and evolve it as you go along. You absolutely have a right to protect yourself.