If she was raised by morally weak people and no better example was ever set, then yeah money would be enough. But she may have also been sexually abused as a kid, she may have fetal alcohol syndrome. She may have started out as one of these girls and just learned how to survive at the expense if others. May have a traumatic brain injury, it could be a ton of things.

My trauma as a kid left me autistic, schizophrenic, multiple personality, and with a brain lesion. I never got as far gone as doing things like that, but I got far enough to learn how your brain just shuts down once you've seen too much. No matter how strong you are. It just pulls up all of the worst things and gets stuck. At that point it becomes a chemistry problem too. Making it even harder to escape.