Of course noone here can diagnose her. She could very well be bipolar with rapid cycling. Hopefully she will agree to see her doctor. She can be baker acted if she is a threat to herself or others. That would involve the police and the ER and a Pdoc evaluating her. I hope she calms down and can see that she needs some help and goes to her doctor willingly .

I know its hard to watch someone you care for have these kind of problems and feel helpless .

Good Luck and take care