[...]
Under the Medical Treatment Contracts Act, a patient has the right to receive clear information from the physician about his medical condition, the prognosis and treatment options. Based on the information provided, the patient can either choose to grant or not grant care providers consent to provide treatment, nursing or care. A patient always has the right to decide against treatment, nursing and care, or against specific aspects thereof. Should the patient not grant consent, the care providers may not provide treatment, nursing or care.
Obviously, there's a way to get around that in case of mental illness: by getting a court order for involuntary treatment.
In fact, this girl had already undergone involuntary treatment on several occasions after several failed suicide attempts:
[...]
Noa has been admitted very often in recent years, to hospitals, institutions and specialist centers. Horrified, she recalls involuntary admissions to youth care institutions. She could only wear a tear-proof dress - an emergency measure to keep her from committing suicide. Being institutionalized had a traumatizing effect on her. "Never, never will I go into isolation again. It's degrading."
Coercive measures are humiliating, says Noa. She will never forget how she was taken to the Arnhem court, where judges decided on involuntary admission to a treatment center. The sight of the "people in gowns" stayed with her. "I almost feel like a criminal, even though I haven't so much as stolen a piece of candy in my life," she writes in her autobiography.
And last year:
[...]
Not too long ago she was admitted in critical condition to a hospital in Arnhem, severely underweight and at risk of having vital organs cease functioning. She was even put into an induced coma so she could be fed through a feeding tube.