There are various of Cause in such conditions. There may be physical causes as well as mental causes. Hormonal dysfunction , any brain disease , any neurological disorder etc are fellnin Physical sides. Mental disorders like depression , Bipolar mood disorder , personality disorder etc may fell in Psychological aspects. Consult psychologist or me immediately for proper diagnosis and treatment of tge disease. If she needs medication then also consult psychiatrist or homoeopathic doctor.

It needs to be investigated there can be any underlying cause for which you should speak in detail with a mental health professional Consult with me or any psychologist for therapy and counseling Connect with me through text All the best

I think she is undergoing some anxiety or stress, which she is unable to handle by herself... I suggest you to seek a professional support. Encourage her to meet a psychologist for a therapy.

Few details are mentioned in your query. Consult psychiatrist online or in person for evaluation and treatment