I thank you for your needing to help your sister. It certainly is a good idea for her to see a licensed psychologist to figure out the roots and origins of her anger so she can heal and release the unnecessary anger. Sometimes people do express their depression through their anger. Has she read a book titled "Feeling Good" by Dr. David Burns for depression? You may want to recommend it to her. There is also a book by His Holiness the 14th Dalai Lama called "Healing Anger". She could also read "The Art of Happiness" by HHDL.
Dr. Lata Sonpal
Anger can be a symptom of depression. If the medication is not working, maybe your sister should consult with her physician to try a different dosage or different medication. Psychotherapy may help identify the core conflict that triggers the anger, and psychotherapy in conjunction with medication is effective for many people.
Patricia Harris | MA, LPC