We just feed off the blood. A pint or two won't kill a person, but people are quite attached to their bodily fluids. I don't blame them.
That could work quite well, though I may be having a couple other young ladies and men in a trial run. Whoever's the better assistant, who I feel I could get along with personally, etc, could get the full time job.
But it's a great thing you're doing, offering your services, young miss.