He knows he shouldn’t care. Sophia isn’t his, and he wasn’t the one that left her alone out in the woods. He’s angry at Rick for leaving her there, and angry at Carol for not watching her daughter better. And, if he were completely honest with himself, he knows he’s angry with himself for not finding her sooner. Daryl knows he’s good at tracking, and finding a little girl shouldn’t be so hard. There’s no way she could have gotten too far.
So he keeps looking, the stench of death and decay heavy in the air. Whenever a walker appears, Daryl takes his frustration out on it because it’s the only thing keeping him from falling completely apart. Even telling the story of the time he’d gotten lost doesn’t make him feel better. Sophia isn’t him, and he can’t expect her to know how to find her way back.
Its three days after her disappearance when he finds her doll under a pile of dried leaves. It’s dirty, and he inspects it for blood and smiles when he doesn’t find any. He’s sure this means she’s still alive, and still out there. He’ll take the doll back to show the others so they know he’s not wasting their time.
All he needs is a few more days, and he’ll surely find her.
Daryl Dixon | The Walking Dead