I'm going to be contrary here.
From a moral and traditionally christian-informed world view, I find it morally outrageous.
But this is a secular and increasingly irreligious society where morals are increasingly defined by who is hurt.
From that perspective all people involved have consented. This is a woman from a two parent family. She's young, white, beautiful, intelligent enough to get to university, business minded and as such sits within and occupies an extremely privileged sphere of reality. With all that privilege and all those gifted life tokens, she has chosen this.
I mean she understands the psychology of sexual kink and if she wants to inspire and fulfill it, why not? In a post modern world, sex outside of marriage is more about pleasure than family. Is sex outside the confines of marriage more wrong if it involves more partners?
I would say not. If consent and pleasure is (joyfully) given, and (joyfully) taken, what other parameters are we judging it adversely by?