Re: McKenna Grace, 20

Unless you're extremely talented or popular, refusing to do any type of role can blacklist you and hamper or end your career.
I remember reading about a very talented black actress who refused to play domestic help. She was "crushed by the Hollywood machine."
I remember reading about Gene Roddenberry. He wanted to move on to producing films. During the filming of "Pretty Maids All In A Row," one actress refused to do a nude scene. That effectively ended her career.
As for child marriage, what we know as "childhood" and "adolescence" should be a time of maturing, exploring, and learning. A true ped would assist a child to grow and be all they can be.