How can I have someone involuntarily committed to a Mental Health facility for observation?

In order to meet criteria for a involuntary commitment she needs to be evaluated by a psychiatrist and found to be a danger to herself or others. It does not sound like this is the case. If she presents as dangerous call the police, they will medically clear her at the ER, she will have a psych consult and then committed. I would speak to her husband about her strange thoughts (possibly delusions). Usually when someone loses touch with reality their delusions are bizarre, like aliens living inside them ect.