So first of all, please excuse my English, I'm not a native speaker, and also this isn't about a man, but more like about an abusive ex friend of mine.

So I had this friend. She blocked me on FB and IG two years ago, without giving me the reason. I've known her for years, and she really wasn't a good friend, actually kinda emotionally abusive (silent treatment, "joking", mean).

Why I think she blocked me back then is because I was very busy, working full time and working on my masters. She was upset, that I never come to visit her and her children. I explained why I can't right now and then I found out she'd blocked me. I'm not lying, I felt so releaved. But then, few months later, her MOM contacted me first, we talked, and few minutes after, ex friend texted me, too, asking the details about my life. She was acting like nothing happened at all. She was mean again, I told her I'm moving away, and she told me that it's not the city's fault that I'm not succesful.We've never talked about the blocking thing.

Since then, she contacts me twice a year, asking the details about my personal life, then criticize me. I reply using one or two words, or I don't reply at all.

I finally blocked her this summer, the trigger was, I found old photo of mine I've shared on FB, with her commenting it, that she remembers me as a sexy girl, and "what is that", that I look like from another plannet (I was travelling SE Asia back then, and was practical about my clothes). That was my impulse for finally blocking her. I decided I don't want that person in my life.

What happened yesterday. She sent me a random message on my new IG account, which she isn't supposed to know about, I didn't reply and blocked her. Then she sent a message to my other friend and asking her, if she knows why I don't talk to her! Friend said, that she doesn't know. Then her mom contacted me, asking the same, I deleted the message, then, the ex friend sent me another message from her other account, I deleted it without reading and blocked her again.

So it seems that she either doesn't remember that she blocked me two years ago, or she thinks that she might manipulate me into thinking she really didn't.

Do you think I should tell her that it's because she had blocked me before, and she's been emotionally abusing me for years? Personally I feel like I don't want to talk to this person ever again, but I'm afraid she won't leave me alone without the explanation.

Tl;dr: (Abusive) friend of mine blocked me two years ago over a stupid reason, I blocked her this week. She keeps messaging me asking why I blocked her from the various accounts. Is this gaslighting or she doesn't remember she blocked me first?