His sister was 21 when he was sentenced, sometime after November 2005. This means she was 17 or younger when their first child was born in 2001
If they had sentenced him then, that would have been the right thing to do.
But now they have four children and the sister WANTS to live with him. So what pint does it serve to lock them both up now and have their children be brought up in an orphanage or in foster homes?