Is OTHER wrong in the post ? POST : Long story short, my father's side of the family has always been a mystery to my brother and I.. We haven't really tried looking too hard into things because our father was kind of an alcoholic rolling stone.
My brother and this girl have been dating for about 3 and a half years.. One day she gets a wild idea to go track some of our father's family down and ask a lot of questions. (Via social media. Which is quite a task because we have a very common last name)
Now I have found out how my father died and where and neither of us asked her to do this or showed any interest.
I used to like her a lot but I feel like this crossed a line and I feel a lot of hatred towards her for it. I can't tell if I'm just being overly sensitive or if I'm justified.

TL;Dr- my brothers girlfriend found some lost family members, found out how our father died without us asking her to, now I hate her.