And the outcome of that was what exactly? Other than the supposed psychological condition (the treatment for which didn't work) did they come up with any diagnosis?
The treatment didn't work? Psychological therapy can be a multi-year process.
IMO she was healthier during and immediately following her stay in the psych ward than she was when she was admitted to BCH and than she is now, after being back in her parents' care.
Immediately after BCH, she was well enough not to need hospitalization, to be in the step-down facilities, to go out to see shows and Red Sox games, to eat again without swallowing issues, etc.
And never forget that BCH wanted to release her many months earlier, but the family would not agree to the placement in a non-medical facility, even though it meant she would soon go home. That is why she was in Massachusetts for a year, NOT because the hospital wouldn't release her.
Let me repeat this in simple terms:
Under her parents' care she got so sick she needed to be hospitalized for months.
Under BCH care, she improved in measurable ways, and was able to live in a non-medical facility.
Back under her parents' care, she got sick again in about 2 months and has been hospitalized for about 2 more months with no end in sight.
IMO, there is a pattern here and it does not make the family look so good.