I was adopted. I have a letter from the state that says they did a paternity test on the man on my birth certificate and he was not a match, therefore not my actual father. That letter was from 2003. A few months ago I did an ancestry dna test and matched with the same man's daughter. How is it the same man's daughter is my half sister. I cant prove hes biologically related to me since I matched with his daughter and not him. But I also think the state could have messed something up on the test and I want to know if they did. I tried reaching out to his daughter/ my half sister but she wont reply to my message. What should I do now? I don't have money for a private investigator so I'm lost. Help?