Should my mom get divorce ?

I am 17 year old wanted my mother to get divorce and live in freedom i am thinking it because from marriage she is getting verbally abused at extinct and sometimes physically also . After her marriage my father was in debt due to some family reason she support him by selling her gold bangles and necklace but he illtreat her everytime, used to mistrust her saying u having affair like things my mother thought everything will fine after having baby so they planned me but it didnt stop there when my mom was pregnant he used lock her in room and having daughter he was not happy things got worsen by the way he is addicted to alcohol like 15-20 days he stop working just drink at home disturbing whole family like abusing verbally dont let us sleep for night we having school next day then he sleep whole day and at night abuses now its 17 year she is surviving and not able to move out because not had support maternally and she is only graduate so not independent but she is getting punish for things she never did and hear things which dont has her fault .