Dean hadn't meant to fall asleep when he did! but truth was he was exhausted. Between looking after Erin, her play date with the boys and still stressing about his dad and Sam, despite Elena's story, he just passed out. He never would have expected her to dip out on him, though. She was a kid. She wouldn't go too far, right?
Wrong.
Dean woke up from his impromptu nap and expected, worst case, the kid had made a giant mess in the kitchen. "Erin?" He called out as he padded through the apartment. No answer. He frowned, "ERIN!" But with a quick sweep through the place, she was nowhere to be found. Dean immediately flew out the door and out of the complex, searching for her anywhere he could think he might find her.
He was about to go into the convenience store and ask if anyone had seen her when bam! a tiny body slammed right into him. "Erin! Where the hell were you?" He barked, grabbing her arm, "where do you get off runnin' off like that?!"