Um, so an ex has contacted me and wants to reconcile. I do not know what to say. What would you say?

This person said a lot of hurtful crazy things, even threatened my life, and is the only person who my family said, if I have anything to do with them again, they will never have anything to do with me and I will never see my children again. That alone, is enough for me to know my answer; however, I don't know a good way to put it coz apparently she has gone to a lot of trouble to find me, supposedly really misses me, never stopped "loving" me, and she actually came up with good ways to use my Asperger's traits, rather than put me down or ignore me for it and she would talk to me about stuff, always. I am confused. I don't want to go with her anyplace to even talk, I don't want to just be friends either, but I don't know how to say things so she doesn't get mad/stubborn and show up at my work or something to try harder to get me to go back or whatever it is she must really want from me. (Coz I think there might be ulterior motives too, she's a hustler, kinda.) I am kinda excited that someone actually wants to be around me, even if it's her, and I'm the silly kind who misses people I was attached to at all, and well, you might see what I'm trying to say. In her last text, she mentioned our store idea (something I've posted on here a lot) and apologized for insulting some of the things I did in current job, then implied slyly that I might to have it sooner rather than later. We were supposed to have one, once upon a time, something else I wrote on here before. Anyway...I know she is probably going to find this, but I think I have a right to ask some strangers what they would say to someone who is good at saying and doing the right things, but gets wicked angry sometimes....