Have you ever had a jealous parent?

I am a family oriented person. I also am loyal. When my parents divorced at age 17, it made me take a closer look at how to know if one is married to the right personWhen I got engaged at age 26, my mother became very jealous. Now, it is three years later and she is still trying to get revenge on me. I suspect she is being told incorrect ideas from family or even her psychologist. By the way, I had to get married in city hall without her or my dad there and am happily married three years.
In the beginning of November, she called me, had visited her neice on a trip, came back, I asked for some gas money, she screamed at me stating whatever myself and my husband need, it is our fault, we deserve bad life etc. She told me she didnt care about us. She then mailed me a gift card she received from a friend she said she didnt like. So we made do with our situation and disconnected our cell phone as we were tight with money temporarily , no contract cell.
We had a nice Thanksgiving, had a simple meal at home. In the evening this so called mom left me a message, asking me if I had a meal to eat. I have no idea if she is like this from her medications. She seems to not be able to decide on anything so we suspect she is a schitzo. We dont know. We had asked her not to call here or not to write if she really believes she doesnt care. Now, I got a phone call from a "friend" of hers, who says your mother was worried about you. I didnt answer. I am struggling because it seems all she does is spread lies to people. I accept I no longer have a mother, but now, it has turned into harassmment. I find it hard to go on as I normally would when I have to consider taking time to get a new phone number, get a new email, the person will not leave me alone at all. And my husband who is very smart and good with people said all she wants to do is start trouble, bring people down. I am concerned I will eventually have to change my name or go to great lenths to hide. We are all entitled to our freedoms and I am feeling unsure of my own.