Hi JJ, sorry you are having such a rough night - that hurts!
I know you aren't "relieved", certainly not now. Keep in mind that you won't always feel this way though. I don't mean the relationship was not important to you - not at all, I just mean that while immediately it's so painful, you will start to slowly feel better.
In the meantime, remember to take good care of yourself. Try to sleep when you can, eat well. While you might not feel like it, even try to get outside, take even a 10 minute walk.
Another thing that might help is reading your old threads here. Also writing a list of all the reasons why this relationship was not good. Seeing it right there in front of you can help. List all the boundaries of yours it crossed, mean things she said and did to you.
Keep this list with you all the time and every time you start to focus on the "good times" (and you will) pull that list out as a reminder of why it ended.