This is like blood on the water for investors. 

The previous tenant apparently ran a "dog fighting ring" in the garage and there was blood and hair and excrement everywhere in the garage.

I can't even talk about it, it still makes my blood boil.

In this case we are obviously blood related, and she would be occupying a unit but I would not be occupying.

This is politically incorrect but "the old money" is losing it's grip and new blood is starting to take over.

There is no right or wrong answer to this but you need to determine how it is rectified upfront otherwise it will lead to bad blood later

Blood would flow Jerry, ever seen a 82yr old beat a 30-something unconscious with a walker, well, the above is how ya do that.

And if your team mates do not cough up the rent on time, will you evict them--that will definitely create bad blood in the locker room (forever) which is not conducive to being a TEAM.Many people warn against renting to family members because of this.So at least you have a heads up on that.Good Luck!

In reality, for most Tenants, you cannot get blood from a turnip.

He also disclosed that he and Party B have really bad blood and that he does not care to communicate or work anything out with Party B.