NHS mental health trust making autistic person homeless

I posted some time ago about a NHS mental hospital where a friend was being told that suicidal behaviour, attempting to hang themselves, crying, etc, was all due to autism.

The NHS trust is now proposing to discharge "to front of hospital", stating that the parents have a legal duty to house them. (Person is well over 18), parents cannot cope with friend's behaviour. 

The person is not capable of going to the council for housing help, cannot even speak to people they do not know (selective mute).

Can the hospital do this? Surely they should becalling in social services?

Parents Reply Children