Complex sentence: Weise's life had taken a turn for the worse in 1997 after his father committed suicide and his mother was incapactitated in a car accident, and he went to live with his grandparents on the reservation.
Split into simpler sentences: Weise's life had taken a turn for the worse in 1997 after his father committed suicide and his mother was incapactitated in a car accident. Wiese then went to live with his grandparents on the reservation.