Transcript for Daughter Gives Stepfather a Heartwarming Birthday Gift
Finally tonight, "America strong." The heartwarming birthday gift. Here's Steve osunsami. Reporter: 22-year-old gabby Guardado has a surprise for her stepfather. It's right over here in that little bag. Reporter: He's celebrating his 53rd birthday. And while he's not her biological father, who left when she was 8, David Lynde married her mother, and he's now the only man in the world she calls dad. He's a bit of joker. There's a pen. I got a pen! Reporter: But it's not a pen, or a watch, or even a tie. For his birthday, his adult stepdaughter is giving him adoption papers, legally making him the father he's always been. Do you know what that is? Am I adopting you? I want you to. You don't have to. You could say no, but I want you to adopt me. You've been my dad and I know legal papers don't change anything, but I appreciate -- Reporter: She says she couldn't do this when she was younger, her biological father said no. But love lives long and strong, and on Friday in Florida, gabby Guardado becomes gabby Lynde. You have no idea what this means to me. You have no idea. Reporter: Steve osunsami, ABC news, Atlanta. What a moment. We thank Steve for that story. I'm Tom llamas, we hope to see you right back here tomorrow.
This transcript has been automatically generated and may not be 100% accurate.