Jason noticed when someone was loitering around Crime Alley.
He noticed it even more when it seemed to be a child, and the weather was so chilly that even he considered packing something extra warm while out on patrol. You were skin and bones, didn't even have a jacket to keep yourself warm, and he'd noticed you various times now. He didn't want to admit that his heartstrings were tugging a little bit, but they were. You looked frightened, lost, and Jason had a soft spot for lost things.
When he lands on the ground, you're already alert. He wonders how paranoid you've been on the streets, and doesn't want to imagine what sort of parents had abandoned you. Or what had happened to them. Red Hood's reputation towards children seemed to have made you remain exactly where you were, despite looking as though you'd been about to bolt like a deer and he was the hunter.
"Hey, kid," he murmured, tilting his head. You looked like you weren't eating well. It was beginning to snow and you looked like you didn't weigh anything even soaking wet. He released a slow, deliberate sigh, and began to shuck off his jacket. He'd live; you needed it more. He knelt down, every so slowly, taking in your pale, nervous expression. Jason let his voice drop to a comforting rumble as he wrapped the jacket around your shoulders.
"You know Crime Alley is under my protection," he hummed, making sure you were tucked up good in a cocoon of warmth. "Why are you out here by yourself? It's dangerous."