The sad thing is that whether the allegation is true or not true, his life and that of his family now lies in ruin.
Yep, two crimes that people never forget, rape and child molestation. Even if the accuser admits to lying, the stigma will follow him for the rest of his life.
I hope for the sake of his family the girl is lying.
In a just world, any false accusation (of ANY crime) would carry the punishment of the crime that was falsely claimed.