<human>: [not sure whether to label this relationship or non-romantic, sorry about that]

I've been dating this girl for since October, for the purposes of this we can call her Laura.  Laura is 17 and lives at home with her mother and father.  She's told me many stories in the past about her father being emotionally abusive to her, and her mother being an enabler for this kind of behavior, which I've always watched out for, being a survivor of abuse myself.  Things crossed lines to new levels yesterday though.

Yesterday she got into a verbal argument with her dad, which happens pretty often.  It escalated though, and according to her he charged her, picked her up by the throat, threw her down, and punched her in the face several times.  I came over shortly after this, after he had left the house, and there were bumps on her face, as well as scratches on her arm and neck.  Her mom and brother were both very dismissive of this, placing the blame on Laura for "having an attitude" and "making her father angry enough to have to do that" and hearing that, in person, out of their mouths just enraged and disgusted me.  At one point they made me leave so they could have some "family time", whatever that means it couldn't be good.

Laura revealed to me that this physical escalation happens a few times a year, the threats of physical escalation are constant, and this has been a pattern her whole life, and she is very scared to involve the police because her parents have both said that they will deny everything if the cops get involved.  I'm on the brink of calling them anyway, because it's still a good 6 months until she turns 18 and it hurts to think of her feeling scared and trapped in that environment for any longer.  I just don't know what to do, but I care about Laura a LOT and I want to do anything I can to separate her from her abusers.

Can you summarize the given text in a few sentences?
<bot>: Girlfriend is being physically and emotionally abused at home, she is scared to get the police involved, but can't run away due to not being 18 yet, we're looking for advice.