I guess another tag should be added to the OP, "retarded logic".
That's the Dev's fault- he didn't have to make her a child or even allude to the fact that she was one. He doesn't seem to have any issues with sacrificing her to the giant, blob-like, Hellraiser Hydra thing. That was rather gruesome, not so much visually...but I wasn't expecting that soul-piercing scream. Lol
the game is not porn sadly,
the game themes follows the Pagan mythologies & symbolism & hawaiian temples cults
of fighting ones inner demons[won't be easy...] ,
the child girl represent your child like mental state in these dark times[she is not real],
being serious & sacrificing your inner child & innocence will turn you into an adult but at the loss of your innocent child mentality,
keeping her alive is the key into finding the truth and becoming the hero of this sad excuse of a land[reaching enlightenment],
the coin flip represent real life
[life is filled with random outcomes & non predictions,
even the most powerful person in the world can be beaten by a flip of a coin].