don't want my "MIL" too involved in my childs life.?

She's not even my mother in law because I'm not married to her son. I just don't want my child involved with her or their family. They all have some problem and don't want my child to feed off of them and think it's ok to be the way they are as she grows up/ It's really stressing me out because I know that it is going to be her family and I don't mind having her see them once in a while but I kind of what to be away from them for the most part. My B's mom is always having money problems and asks for money all the time. When my bf tell's her he doesn't have extra money to give her she always says "wow thanks, I'll see what I do" or "you liar you get paid a lot of money" its so annoying, Then his sister is an alcoholic who has no job living with her mother and doesn't even have a HS diploma, She also has an almost 30 year old son who doesn't even pay rent and lives in her rented condo there for free. She always has excuses for why their like that like "they are going through a lot" "their just depressed" I wasn't raised to be that way and it's really bothering me. What should I do? I don't want my daughter to think its ok to follow this family's bad chain. Any advise?