I have no desire to control anyone and I look out for myself without harming others.
I agree there are degrees of sociopathy. I don't really think this woman was seeking to deliberately cause me pain, but she was ruthless in her attempts to extract whatever she could from me.
That's what is so scary. It's easy to excuse the behaviour for a long time, before reality hits home.
What on earth was she trying to get out of you? She was the mother of a good friend you say, my relationships with mothers of good friends are usually hi/bye and the occassional dinner perhaps. Just curious to know what sort of relationship you had.