Offering to help a child. That's +10 karma shit right there
She may be a vampire but she has a kind heart. She doesn't need to be human if she doesn't really want to. Her heart is already more than human. Hopefully she finds her inner peace with maid-chan as her wife
There exists just one manga I know of that has a vampire 'turned' to human (was originally vampire to begin with, never was human before story began) was Karin (Chibi Vampire in western version).