I think Abby is long past the point of being a victim and has fully embraced the role of manipulator. Whatever genuine concern she might have for the boys/men she pulls into her world, the fact remains she needs them to kill for her, and in return they get... what, exactly?
My assumption is that she gets them while they're young, and by the time they're old enough to realize what they've gotten into, they've already killed on her behalf many times and are completely trapped in the situation.
I'd go as far as to say it's a tremendously abusive relationship, though not in the conventional sense one would define "abuse." More like an endless psychological torment inflicted upon them, subtly at first, but directed entirely by her until there is simply no escape but death.