You might want to check with the police re what is the law in her area.
Wii, we Americans put a lot of faith in liberty and the ability to make decisions for ourselves. And as you might guess, it puts a lot of burden on society when people who are not clearly thinking well or making good decisions are allowed to run free. We have what is called a 5150 hold. It allows you to have them hauled into a mental health facility for observation if they are show harm to others and/or themselves. And then you have to go to court to petition for a longer hold and possibly conservatorship. It's not often granted, especially if the other person doesn't want to be there.
We have a case here of a 23 year old kid whose divorced parents tried for years to have him committed, with no success. He's currently standing trial for murdering and dismembering his mother. He actually crashed her car (with her severed body parts in the car) into a wall about 1/4 mile from me. His dad has been very vocal about the lack of help out there, especially since he and the mom told the courts that he *was* a danger to himself and others. Sigh.
I hope this is something that can be more individualized in the near future. I wouldn't want the blanket ability to commit someone, but the ability to do so if there is sufficient cause. It's sad.
"There are only 2 ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle."