[She stepped back and laughed a little, though it was a bit of a hollow sounding one. It wasn't the most funny situation after all, but his apology made her feel amused and at the same time sorry for him.]

You needn't apologize. It isn't the first time I have been covered in blood. [A shrug.] And I think that, if your heart still beats, it is most likely the answer is alive. The undead tend to be a touch more cold inside.