I have not seen the argument of their rights to publicity. As children, they couldn't consent to the sex, therefore they couldn't consent to the graphic depiction of the abuse and therefore it is a form of intellectual property theft. Anyone viewing it would have to know that the victim does not have the capacity to consent.
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God grant me
The Serenity to accept the things I cannot change,
The Courage to change the things I can,
And the Wisdom to know the difference.