No only the government can commit.
family is nearly helpless here.
It is a social tragedy
That is a shame. One of the arguments against parents/family committing a family member is that the process can be abused. People could be misdiagnosed, over-diagnosed, over-medicated, and/or locked away for life.
But, now, if a mentally ill family member becomes violent and destructive, the family’s only option may be to call the police? Then the police have to treat the situation as dangerous, and sometimes the family member ends up dead.
Or, the person with mental illness ends up living on the streets. Or, that person ends up hurting or killing someone.
It seems a mental health institution would be a better option.