In a telling conclusion, jurors said failures by staff at Meadowfield Hospital included the admissions process, understanding of existing diagnoses, record keeping, family involvement and discharge planning.

They also said the care should have been more in line with Morgan’s autism.

Jurors also said staff had failed to act professionally regarding a letter of apology Morgan wrote to staff following an incident of assault which led to a “fractured therapeutic relationship”. Staff had not accepted her apology, the inquest heard.

The trust said in a statement that it recognized its failings and offered its sincere condolences to Morgan’s family.

It said: “Following Morgan’s death, we have implemented measures to improve safety and risk management in our inpatient units, as well as increasing the involvement of families in the care and treatment of our patients.”