There is truly nothing you can do accept offer your wisdom and support.
Unless you are a therapist.
If she seems like she might harm herself, you can then report this to her doctor or the authorities and she can be admitted to the hospital for 72 hours of evaluation and treatment. But if she is stable after that, they have to release here.
Getting all friends and family together to express ;concern, if done correctly, can be helpful as well.
With the idea of getting her to a PhD clinical psychologist to help.
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