She heard someone but at the first place, she didn't even think about the idea that someone was saying anything to her. But still, she raised her head and saw Christian Zabini. He was the seventh year. She didn't even know that he knows her name. Because, why should he, he is senior year, he doesn't need to bother with younger students.
But he was saying to her. So she naturally put a friendly smile on her face trying to hide just how confused she is because he said something to her.
"Hi. Yes, that's me." She heard stories about him being involved with Potter's Army but those were just rumors. She didn't know for sure who is the leader or who is in PA. That is the reason why she was still neutral, but she tried to overheard when someone was talking about factions.
"Um, sure, you can sit here. I wouldn't mind." She was confused because, to be honest, there were a lot of free tables but she didn't have reason to say no. She looked at him once again because she felt she should say something, she didn't want to act like someone who cares only about herself. And she was friendly, that was stronger than her.
"I came here to read some stuff for fun." She looked at his book. "You like potions or it is just for assignment?"