I'm so sad that you had to go through all that. You're a wonderful person and didn't deserve all that.
It is natural to be emotionally unstable when you see those people, but please try not to break down. It would be better to channelise your anger, instead of your sadness. If you get what I'm saying?
I mean, get angry at them (I don't know if you can, but this is how I deal with it.) but don't show them your weakness or the supposed control the psychopath has over you. I wish you happiness and strength in all these tough times. Have a great day!