Hell, in the old days, the beating of the son would have been closely followed by the chasing down of the cousin and shooting him. Child molesters should not be tolerated.
Texas Statute 21.11
(b) It is an affirmative defense to prosecution under this section that the actor:
(1) was not more than three years older than the victim and of the opposite sex;
And the last qualifier would not stand up under Lawrence v. Texas.