From Vampire Hunter D: Bloodlust
It may be too late for her. Your sister may already have been tempted. What then?
You have to get there before that happens, what do you think we're paying you for?
That's enough!... My son is emotional, please excuse him. This has been difficult for all of us. If you knew my daughter, you'd understand. She's kind and beautiful, and her loss is more than this old soul can bear. Now, I need to ask you something: if you find her changed, can you see that her death is without suffering. Be kind to her, please.