What would you do

So my brothers girlfriend moved in to our home in January without letting any of the family know.. we were all in Mexico for vacation. And when we came back she was here.. he spoke to my mom that she doesn’t have any family in the state and doesn’t have a place to stay and that’s why she staying with us.. her mom is in Mexico..

My brother said give me 4 months and I’ll move out with her.. but it’s August and nothing has changed.. The girl never talks to me or my sister rarely to mom and dad she’s always in the room only goes to the restroom, showers, and eats our leftover food with my brother when everyone is sleeping.. or my brother buys food and they eat inside the room.. She doesn’t work doesn’t go to school.. nothing.. I guess she expects my brother to buy her everything which he does like food, shampoo to shower everything.. she basically is living for free..

She left to Mexico to visit her mom in the hospital because she was sick. I thought she wouldn’t return but recently she came back

My brother has changed so much.. he rarely talks to us.. right now he’s jobless.. since that girl has been in his life he’s been a completely different person.. doesn’t seem to want to work or anything and before he did..

Recently they both took some pills together and she overdosed.. she almost died.. in the house!!

It was around 3am My brother woke us up to call 911 he did CPR while the ambulance was coming..

We dont have any communication with her family only my brother and her.. so we looked for her mom on Facebook to let her know what was going on... & the mom said she was really stubborn that she wanted to leave to the USA and that’s why she left she didn’t want to stay in Mexico with her mom..

She okay now.. but i don’t feel comfortable in my own home if she comes back.. she’s in the hospital right now plus I’m scared that it may happen again.. if she stays with us.. so we told my brother that she’s not welcomed back.. and he keeps saying I did all of this for nothing...

He yells at he to shut up and to go and die..

that no one understands him..

Later today he came back from the hospital

And my dad told him that she couldn’t stay here anyomore that he was willing to buy a ticket for her to go back to Mexico with her mom

And he said I’m not just gonna throw her in a flight like that

Idk what to do...

what do you guys think we should do...

He’s 21 and she’s 20