Transcript for Facebook group connects people grappling with shocking DNA test resultsbr My da was M best friend. Reporter: Eves an adult, hope la was daddy'ttle girl. We would talkthe phone fou times aweek. We talked about dating. Marriage. His golf game.everything reporter: The51-year-old daughter of an armynthope gre up with her father teaway. He was ally gonequite a bit. So it St me and my mom. The relationship' the best my mom. But Y managed to build a beautifulily on Y own. Reporter: A beaul family Ken for granted. But a routine est searching for ancestral Lin toica would throw all that into question. So you excited toeeort of E itage is from. Ight. Ths you're looking, on the next pag it says, "See who you match up wi." What did find? The first person W match th,t said, this either your rent, your child, or your identical . Did have a C at that point? That you didn't know about? That I didn'tabout, rm Bel go off? Immediatel think immediately start shaking. And my heartas pounding. Reporter: Cnced the must beomort of mistake hope reacho her genetic tch. I sent ao them H ancestry. And I said, I just G results, and I don't under whatheymean. I filly said tohim, myda Na W wheeler and my mom's Meas Lillian, and I was born in Albuquerque. That was wn he responded back andsaid, I Thi I know whhismeans. He said, my heart isnding. And io cause you any pain. Going through your mind? What pain is he going cause me? Whathe going to tell me? Reporter: Came the call that sent hernto sh He , my name is Melvin, there' not an easy way for me to say this,e says, but I'm the. Howid that hiyou? I rember tears immedia streamedown my fac I'm thinking, how could this ibly ? I have a father. My dad raid me. This can't be hang. R: Melvi TD her that whi the dad who raised her had beenoned abroad, hee had a brief affaiit mother, nnowing she was ma ho's mom later told Melvin she'd bec egnant, B then took the secret to hergrave. I went THR stage W I was ----now who be Ang O upset because of the denial the S that been kept. Reporter:n despairope os LE her. Her search led to this woman, Katherine St. R, who srted a febook group calledanpe friends, "Not parent expected." . Clair too stning results when she ceived a DNA day prese from her siblin Wn ame to th alization myrother and I were ha-siblings I looked and theeiesta swing liken lsd ip. Rr: She created this discreet, invitaon-only facebookgrp. We said, M we can find E can talkto. We S aty, wouldn't it be wonderful if we could get as as 12? R:allooned to 2,200. For npe members, gro been ane. O ushese people CING us with aaw, open wound. And there's nope adminter medical help T that wound, you wi Do you ever eounter tho know-ust LE sleeping dogs lie? Ohsure, we heart allthe time. And ridicul. Rid a lot. Becausehe attitude is, you ouldn't Beal this. Hy air D laexactly. But that's calling me dir Laun I'not dirty laundry, I'm a human being. I'm T , on. Repr: For ho, it wa time to confront her newy.