My sister is close to homeless she drinks so much, my mom is paying a room for her to stay. Every time she calls me she sounds super groggy/drunk and burnt out. After chatting for awhile she always tells me she has me on speaker phone for her drunky boyfriends to hear Which pisses me off. I told her it's unfortunate she's choosing such a loser path in life and may end up dead. Should I even answer her calls anymore? What is the best way to deal with this without being too cruel and messing her up more?