But what if I need a new kidney?

I am adopted. I have known that I am adopted since I was small. In a set of actions which are best described as Lifetime Movie-esque, i spent fewer than 5 minutes on the interweb and found my biological mother. Then, without bothering to look into the correct etiquette (who knew?) about these things, I picked up the phone and called her. And she answered. That was 2 years ago and the subject of posts yet to be done.

Anyway, it turns out that my birth father (dead lo these 10+ years) contributed an X chromosome to a half sister and his Y chromosome to a half brother. Well, actually, 2 half brothers but one died at a young age in a swimming pool accident. I have the name and address of the half sister. I have also been told by my b-mother and a b-cousin (is there such a thing?) that she absolutely, positively would not want to know anything at all about me. Not to be a bitch, but WTF? And what about what I want?

And the half brother - well that is another story. It seems that when my b-father and his wife (not my b-mother, you see) had this son, the wife was so uncertain of her marriage's future (yes, due to my b-mother's continued presence in my b-father's life) she (the wife) gave that son up for adoption. No lie. And if anyone knows anything at all about him, well, they aren't talking.

So what about him? Does he know about his full sister (my half-sister)? Does she know about him? And if she does, I am stunned to think that she doesn't want to make contact. What a mess.