Pride and Prejudice and Zombies, book 2: Dredfully Ever AfterSteve Hockensmith2011

The honeymoon has barely begun when poor Mr. Darcy is nipped by a rampaging dreadful. Elizabeth knows the proper course of action is to promptly behead her husband (and then burn the corpse, just to be safe). But when she learns of a miracle antidote under development in London, she realizes there may be one last chance to save her true love—and for everyone to live happily ever after.