It sounds like your parents are enablers. My brother lives with my dad and has to drink every morning or he'll get the shakes. My dad won't kick him out and my dad drinks too. I'm a recovering alcoholic so I rarely go over there. So yea your bro need help and having another enabler such as his girl around is only going to make things worst. Sounds like this girl needs to either pay rent or gtfo lol. But that's the homeowners call.

My brother has this on again off again gf of like 12 years now. She shows up unannounced and invites herself and her two kids to the dinner table when no one even knew they were coming. There's ppl out there that just live their life's leaching off of others.

Dx: BP2, PTSD, bulimia/anorexia
Seroquel 300mgs
Trileptal 300mgs
Buspar 45mgs
Ativan 1mg PRN
Vyvance 70mgs PRN