Sadly,,you can't make a silk purse out of a sows ear,,meaning that a person who's in the depths of mental health is beyond redemption really and is only then treatable by drugs. No quality of life whatsoever. Sheila wasn't yet in that category, but without knowing about such illnesses back then ( as now,really ) she too would have probably been housed in an institution of some sort for her own safety as well as that of others.
There's a home not far from me which houses an assortment of " patients ",who are visited and their behaviours kept under control . They are pleasant people in their own little world,and just now and again,the Tourettes man will kick off,but not a problem as folk are used to him. Another talks so much he doesn't stop for breath. These are the type of people that thrive in the community,but at the same time,they are regularly monitered. Not to my knowledge are there any schizophrenics living there. I do know that there used to be one a couple of years ago who'd murdered someone,but I don't know where he is now. It happened over a Christmas period. It was a random killing,and a bunch of flowers can be seen tied to a lamp-post each year.