"As of lately (less when I was younger) iv felt like my mother only cares about herself. Like nobody else matters. When I was younger I thought she was the best mom ever. Although I don't remember much of my childhood. I do remember my mother always painting my dad in a negative light ( I believe she did this to gain sympathy from me and gain control over me from my father)"
It's not uncommon for selfish/possessive people to behave like this (personality disordered or not).
She was never satisfied. I remember this time my dad came home from work. My dad was unhappy with the way my mother cooked potatoes (he likes them mashed, no chunks) when my dad confronted her, it was his fault, because "you're to picky"
There could be many explanations for what happened there.
I remember times when she was drunk while getting me off the school bus. She often smoked weed while I was in the car. She told me her joints where "little cigarettes"
I've seen and been in this situation more than once. No one involved was a sociopath.
"Just the other day, I forgot my iPad open. It had a picture of my bum on it ( I was sending to a guy friend) when she walked by and seen "is that your bum?" She asked. "Yes" replied. "Oh it's a nice bum then". A couple days later her and I went to my aunt and cousins. We were all at the tabled conversing, joking and having a good time. She told them about this. I was very embarrassed and shameful. But brushed it off as a joke."
The initial surprise is understandable. But humor often diffuses those situations pretty well.
So far: What I am seeing is a mother who likes to be in control to some varying degree. Nothing thus far hints at AsPD. Has she done things that led you to believe she is personality disordered?