My FI has mentioned that one of his sisters would llike to one of my BMs. I am close to her and was planning on asking her anyways. The problem I have is that he has two other sisters. One which is a raging alcoholic and cuases drama wherever she goes and the other that just turned 18. I only have three real people that I really want in my BP so there is room for them, but I just dont want all the craziness that will go along with his one sister and I am not at all close to his younger one. I feel like not asking them will cause problems. Please Advise!