What are the motifs in Flowers in the Attic by V.C. Andrews?

Greed is a theme in the story. Corrine Foxworth is a woman who is used to getting what she wants. Corrine was raised in a privileged household with a father who doted on her every whim and was willing to give her anything her heart desired. When her heart desired a relationship with her half-uncle, Corrine jumped in with her eyes wide open despite the shamed reaction of her parents. Corrine, always brought up to believe she could have anything she wanted, took what she wanted despite the blood relationship that made her desire incest. Corrine qualified her choice by suggesting that others in history have married closer relations and nothing bad every happened.