Does Drina die? Did Ever kill her?

According to Damen, Drina's lack of love, which ultimately made her defenseless was the cause of her death.

He shakes his head and laughs. "What kind of books are you reading?” Then his face becomes very serious when he says, “It doesn’t work like that. There’s no beheading, no wooden stakes, no silver bullets, it all comes down to the simple fact that revenge weakens and love strengthens. Somehow you managed to hit Drina right in her most vulnerable spot.”

“The body has seven chakras. The fourth chakra, or heart chakra as it’s sometimes called, is the center of unconditional love, compassion, the higher self, all of the things Drina was lacking. And that left her defenseless, weakened. Ever, her lack of love is what killed her.”