Yes, but how do we all learn best? It’s not easy to give someone an experience they’ll learn by and it probably won’t be in a comeback phrase alone. God is with her too, leading her along and helping her to develop I’m sure. Perhaps she will learn gradually over many years and be taught by many others. Who knows, we must attend to our own relationship with God.
Pretending that others don’t bother us is onerous. It’s better if we really believe why others shouldn’t bother us. All I can say is I had a very long and difficult relationship which was highly abrasive and destructive and what changed things was when I developed a strong belief in God and everything that His existence meant for me, then I laid down my sword.