Troubled by a zombie

A zombie is a body that walks and breaths but lacks the mind and soul of the person who used to inhabit the body.

I looked directly into the face of a zombie yesterday, and it was chilling. Mostly, it was sad.

Because the zombie used to be my sister.

My 48 year old sister is mentally ill and there's no hint of the person she used to be inside her body.
She refuses to stay in one place, obsessed with cigarettes, and has recently become homeless.
There's no reasoning with her because she only hears the voices in her head.
She rants, cries, manipulates and harasses my parents.

The only mental facility in Sacramento won't admit anyone unless they admit themselves
or someone official like a police officer brings them in. A zombie doesn't want to be confined
and learns how to tell police she's "not a threat to anyone." The police are happy to believe this.

Yesterday an ambulance, sheriff and police car were called out because of her zombie wildness.
They didn't stay more than a few minutes. The zombie continued to harass and stalk the streets.
The police will be called again.

This cannot end well.