At the knock Buffy was instantly on her feet heading to the door. Supernatural abilities or not, she was still a slayer, which meant doing what she could to keep people safe from vampires. She didn't know Puck well, but the important thing was he still had a soul. So maybe if things got bad she could reason with him, she could mention Quinn and Beth, and hopefully the part inside him that was still Puck, that wasn't the vampire would listen.
It was worth a shot. And honestly, it was all she could think of doing right now. It was better than nothing. Better than sitting in her apartment and being bored. Buffy had wanted to be normal for as long as she could remember, but now she couldn't sit back and let everyone else go crazy. It wouldn't be right.
She opened the door and offered Puck a tiny smile as she did so. A very tiny voice in the back of Buffy's mind went 'oohhh hot,' but she tried to suppress it. It wouldn't do either of them any good if she started to make googly eyes at him. Besides she was over boys right now. And he was a vampire right now, and he had a kid and she so did not do the boyfriend with kid thing anymore either. Bad, Buffy, bad! She told herself. Thinking about boys at a time like this.
"Hey," she said. "Come in and make yourself at home," she stepped out of the way to allow Puck entrance. "Got a fridge full of butchers blood. I had no idea if you have preference I know some vampires do so I got a little bit of everything. Except chicken, for some reason chicken blood doesn't seem to be a thing," Buffy paused and shook her head slightly for continuing. "Got a ton of snack food too. You're a vampire like Caroline and Damon right? So you can eat food? Angel would be jealous."