Ok, so we all know that the TV show is not exactly the same as the comics, and that major departures can occur and new characters can arrive. I would love to see a Clementine type story rolled into the TV show. Let me explain my thoughts.
So Rick maybe Rick and Daryl decide to make a run into a town next season, for supplies and what not. They are cautiously making their way through this small town and a similar scene appears in the streets. A young girl, in ratty clothes is standing in the middle of the street. (Now this would bring back memories of Episode 1 of the TV show.) The two men start moving towards her, and Rick pulls up his gun and just before he pulls the trigger he hears her sniffling as if she is, or has been crying.
Rick lowers his gun but keeps it in his hands just in case and says "little girl?" This time, the little girl turns around and is alive. She explains that her father was bitten, handed her this 357 revolver and locked himself in the house to their right. Now Daryl and Rick decide they must take her with them to the group, and Daryl ends up being the "Lee" figure for this new little girl.
Now this would also allow Carl to have his relationship with this girl that he has with Sophia still in the comics. Plus I think having a little girl to watch over adds a lot of drama and suspense and emotion to anything, especially TWD.