Mother may be bipolar

Hi, welcome to the ehealth forum and I am glad to help you.
You seem concerned with the possibility of Bipolar disorder in your mother.
It is not possible to diagnose online but a detailed interview with a psychiatrist is essential as the symptoms that you have described point to some mood disorder in your mother. Bipolar disorder is characterised by unpredictable swings in mood from mania to depression. Mood fluctuations are chronic and should be present for at least 2 years before the diagnosis is made. During a manic episode, increased psychomotor activity, decreased need for sleep, impulsivity and impaired judgment are the main features. Signs and symptoms of the depressive phase of bipolar disorder include persistent feelings of sadness, anxiety, guilt, anger, isolation, or hopelessness; disturbances in sleep and appetite; fatigue and loss of interest in usually enjoyable activities; problems concentrating; loneliness, self-loathing, apathy or indifference; depersonalization. The coexistence of OCD and some personality disorder also needs to be investigated.
Women are likely to have more depressive and men more manic episodes over a lifetime. As the depression is more evident from your history, you might fit the diagnosis of Bipolar II that can only be ascertained by your psychiatrist after a detailed history and analysis and the same cannot be made online. You need an urgent appointment with your psychiatrist who might like to analyse your case thoroughly and institute appropriate therapy.
Hope this helps your cause. Take care.
Note: This post is not to emphasise final diagnosis as the same cannot be made online and is aimed just to provide medical information and no treatment suggested above be taken without face to face consultation with health care professional.