Hello Thomas, The girl is age 19 , She can make her own decisions Also If her parents refuse to let her leave that is false inprisonment , They can get in trouble for that..
Her moms defintely feeling her head with a bunch of bad stuff cause her parents are "Seriously Mentally Ill", You could send a social worker out to her house , So her parents don't do anymore abuse to her ..
One of the things hospitals ask now , When your getting checked out at the ER , "Is there anyone doing any abuse to you"? Since your girlfriend is still age 19 , I believe Childrens Services can help your gf out until she reaches age 21 , Which is consider age of Adult , But legal age is 18 for anyone who wants to date or be with who ever they want ..
Thomas please do something But if you love your gf , You will fight for her safety But whatever you do , Please do not go to her house , Only talk to her , When she calls you , Don't call her house , Don't send any emails unless she emails you first ..
P.S. My advice take things the legal way , You will not get hurt by being a law biting citizen