What you describe sounds a little like cptsd. It wouldn't be unusual after long term stress and duress in the house.

To piggyback on what Open Eyes said, anger, and other emotions, aren't bad. They're there to tell you something- though you're the one who has to figure out what that is. Sometimes, as in the case with PTSD, the anxiety can be like the resonance of a bell that lingers for a while after it's been rung. Healing is a slow process sometimes- just as a broken leg doesn't heal overnight and without gentleness, our minds and hearts need time and care to heal too.