I think Nelly [Ternan] actually has something very conservative about her, and she's very judgmental of (this other character's) situation, and can see that's about to happen to herself. So she judges it even more harshly [because] it's what she fears becoming.
Vampires, real vampires, didn't nibble on the necks of nubile young virgins. They tore people to pieces and sucked the blood out of the chunks.