Menopause period does lead to significant mood changes. However I would still recommend that if these changes have started affecting her to this extent you must consult a Psychologist so that some basic relaxation exercises can be taught to her. In addition if need be she can also be given a proper treatment plan. I would suggest first session to be a face to face counselling session for her.
Next Steps
You as family need to be patient do not get irritated or reply back in a aggressive manner. provide emotional support, listen to her let her vent out if she wants to. Keep her busy.