Getting even doesn't usually make us feel better......what usually makes us feel better is killing them with kindness....it not only makes us feel good because we feel we are doing a good thing, but it usually makes them feel guilty for the rotten ways they have treated us in the past while feeling undeserving of our kindness. (that is assuming that the person has a heart in the first place & awareness that there was a problem....not in complete denial)
Sorry you have a mother who made you feel this way