Abusing A Wife

I was asked what I have learned, its not easy to talk about and what happened should not of.  My birth dad was abusive thats what I learned.  He hit my brother once when he was little, punched a whole threw a door right above my sisters head but never hit her.  My birth mom that is a different story.  I was given up for adoption, she wanted me out of that house, away from danger.
Brian my birth dad not a nice guy, hits his wife now, but she won't leave him.  So what did he do to my mom its more like what didnt he do.  Because of Brian my moms medical file is like a novel.  Shattering her wrist in six places, and breaking her arm, or him throwing her threw a plate glass window.  He has cut her with a knife before, thrown her down the stairs, and beat her up many times.
The scars she has on her body now come from a time when she was with him.  The day she decided to give me up for adoption, it was hard but the right thing to do.  Brian and her were fighting, he punched her in the stomach knocking her to the ground, while she was pregnant with me.  He grabbed her by the hair and pulled her up pointed to her stomach and said "I will make her pay for all of the shit that you have done."  By the next day she was looking for families who wanted to adopt.
The abuse didn't stop until she left him several years later, he would still call her and show up occasionally, the order of protection is in place and always will be because Brian is a manipulative SOB. 
Numerous people asked her not to give me up for adoption, but they didnt know the whole situation, and she didnt have a choice.  I thank her now, and am thankful Brian is out of her life now that my brother is over 18.  I'm happy being close to them now knowing I'm safe, then all the years of seperation, pain, and loneliness were worth it.