I Don't Understand

A friend got sad news today. I do not understand why she has to continue to go through the same trial over and over again. I know God has a plan, and I look forward to seeing it come to pass. Yet I am sad for her. I am sad she has to feel such pain. I am sad that her heart's desire isn't being fulfilled. I wish I knew how to help her. I do know that I can and will pray for her. I honestly don't know how else to pray than to pray for His peace to fill her up.