It seems like this person has developed so much anger in her. Each time she gets angry she would create more karma to be angry. Every subsequent anger becomes bigger and harder to eliminate. It is a vicious cycle. Eventually she would become the victim of her own anger. She will become bitter, sensitive and hostile towards every single object that she encounters. She will on hindsight realize that she couldn’t control her anger even though she wanted to. This leads to helplessness and eventual depression in her!
Please refer the other post entitled ANGER for my sharing on anger and its causes etc.
It is important and urgent now that you extend your help to this person. She is crying for help though we may not see it. To really help her, we must try our best to understand the cause of her anger. The cause could be a grudge, resentment, frustration, unfulfilled wish, disappointment, hurt, abuse, illness, loneliness, separation or loss of a loved one etc. It is difficult to talk her out of anger if she is an old person. We need to be very skillful and patient when we try to help her. Perhaps she needs a listening ear or a shoulder to lean on or to cry on. Initially, we must be on her side by listening and gathering all the necessary information about the nature of her anger. Later we can slowly encourage her to let go of her anger by explaining clearly why it is not beneficial to hold onto her anger. Explain to her the Law of Cause and Effect, Karma and Impermanence. It is also advisable to get her involved in some social and meaningful activities to distract her mind from the cause of her anger.
What matters most is her willingness to try to transform herself. If she is agreeable then she is on her way to recovery.