Everything you are feeling right now is perfectly normal.
My suggestion is for right this minute is to do nothing.
When you are calmer and more in control then you need to set boundaries and let her go.
Do it through ACTIONS not WORDS.
TBH you don't want her back the way she is, only if she is willing to do the work and become a better person. Right now that is far down the road. It is all out of your CONTROL, so work right now on what you can CONTROL. Which is YOU!