"His parents were uneasy about the decision but agreed to let Jonathan into their home after being told the only other option was the streets."
This is a tragedy all the way around.  As we've seen in the discussion of the Junction City hospital there is strong public opposition to locking  up a lot of mentally ill people in hospitals; we'd rather see them in "community facilities" although they are often lacking (as in this case).  Unlike most physical illnesses, it's extremely hard to know if someone has been "cured."
So the state faces the crucial but uncertain   decision of what to do-- in this case, the son killed his father nine months after being released.  What a disaster.