Premanand Maharaj Ji
How should I behave with a close relative who stays bitter or jealous toward me?
Keep your own conduct loving
With a close relative, keep loving behaviour from your side and do not repeat your mistake. If the other person is bitter, let them be, since they act from their own nature.
Your own behaviour should be full of love, and if the other is bitter, let them be. It makes no difference, because they are acting from their own nature.