That is so awful. There's always a cause, because it's a disorder. Something terrible knocked it out of order.
It is awful. Hippy Dippy liberal mother Cher cared more about her career and "tolerance" (Cher knew the woman was a Lesbian when she left her daughter with her.) than about her own child.
It appears she will never have grandchildren from Chastity. Thus does nature punish stupid decisions.
Chastity is the victim in this story.