Hermione released him and took a few steps back, blushing. "I'm sorry. It's just- I haven't seen you in two years. Although, you're a lot younger than when I knew you." She paused and thought that over.
She smiled a little as she tried to think of what to say. Sirius was obviously way younger than when she met him. She wasn't even sure if Harry had been born yet, wherever he was from.
"I'm Hermione, Harry Potter's best friend." She hesitated. "James and Lily Potter's son."