My mum was an excellent judge of character- every time she thought my friends were nice (as they were like her) I dropped them like a stone.
If she hated anyone particularly, I stuck to them like glue to find out in particular what she didn't like about them - too bolshy, too opinionated, too much like my father..... Etc. she'd try and turn my pals against me and would tell them embarrassing stories about me to them, to try and get them all to laugh at me (if they did laugh, I dropped them).
She was very jealous, and had a lot of problems socialising I think. She hated having anyone around, especially my happy go lucky friends.
She doesn't have any friends now, just some people she pities, and she bitches constantly about her family and me and my sister too. No one is good enough for her.
I don't bother with her much now tbh, she's a sad, bitter and twisted old lady I see some times, but in my heart I know she's not that important to me.
I stopped sharing things with her when I was very young.
I still keep myself to myself with her even now, as I know what she's like.
I've disengaged for a long time now, and moved on. I never leave the dcs alone with her, as she's very bitchy to them, and tries to turn them against me and my DH (whom she totally hates).
She loves my dSis's bastard of an X, and fawns over him still, as he's 'such a good christian', despite the plain evidence that he's a spectacular cunt, and made my DSis' life such hell (and continues to do so).
I have lots of lovely friends :) I was lucky, I had a very good Dad, good aunties, and good friends' parents, and they taught me that most people are nice actually, and that her view of the world was wrong.