So, under Sharia, what would it take to convict this monster and what would his punishment be?
And, under Sharia, what would be the proper disposition of the 12 year old girl?
I am not a Muslim lawyer.
However, my understanding is that there is no punishment under sharia for a victim of rape. I assume she must prove, somehow, that it was rape-rape, and that she is not claiming rape to get out of an adultery charge.
In the time of Mohammed, as described in the link I mentioned, the rape victim picked the rapist out of a crowd and he was stoned to death at Mohammed’s command. No other witnesses.
My understanding that DNA and other physical evidence also can be construed as “a witness.”
This is not to say that ignorant Muslims, especially in tribal and primitive areas, don’t misapply sharia. I think these are the primary ones who stone girls to death for being raped, which does indeed happen. There are even places where a girl is sentenced to be raped by a number of men as punishment for an offense committed by a member of her family. Then the girl is stoned to death for immorality. Everybody goes home happy. (Except the girl, of course.)
Such things do happen in (primitive, backward) Muslim areas. I just think it is a mistake to call what they do sharia. (Even if that is what they call it.)