A lot happens in this scene and because of it. A vampire dies, Vincent understands something about Natalia even she refuses to see and Natalia confronts her past.
From Inside the Grey House:
Natalia’s blood grew cold as she read the symbols on the blade. She hadn’t thought the sword was real. But here it was, threatening the life she led. The warrior took over, calculating and cold. She understood his last statement: he probably believed her a vampire. It was to her advantage. As long as he didn’t run the blade through her neck or heart, she would be fine. She heard Charlie behind her growling. Other growls joined his. She could let the wolves take him, but she wanted to do this herself: for Vincent and their men. And she wasn’t sure the sword wouldn’t kill the wolves, too. She glanced back at the wolves and silenced them with a look, repeating her order.
“Keep our men back, lover. Let me take care of things.” There was no emotion in her voice.