You are looking from human perspective IMHO but we are playing as a vampire. Probably I don't give a crap about any human if I were a vampire because I don't give a crap 'bout any chicken as a human. So, why do I care if I made a human loyal to me through addiction? If I recall correctly this was her own decision and players have an option to keep her addiction in check; just say "NO" when she ask for more.
You can't lose something you don't have; -generally speaking- to be a vampire, we must die first... this is where our human part gone bye bye. But I understand you non the less.
I know brother there are different types of vampires
vampires that when they are born they lose their humanity and they don't care
I absolutely hate those types of vampires
but then there is a different type of vampire.
that's when you become a vampire your still you
you are just physically different
you may have the urge to feed on humans but the choice is still yours
and the longer those vampires live
they may stop caring about humans but it's always their choice
then are vampires that have all the weaknesses that vampires do but they can still reproduce
and they don't need blood to get it up
obviously, those are my favorite type of vampires
I like the freedom of choice it's much more interesting
and it's obvious that the vampires in this game have freedom of choice that's why I love it
my problem with rebirth
anybody who played rebirth from the beginning can
tell you that freedom of choice was a thing
and all of a sudden it went too well what can you do