What a beautiful response, Katya, I'm very grateful to you for sharing it (and have just shared it with my wife). Just the other day, we were discussing the purification process/hidden blessing that might be found in illness and your relative's faithful response is an excellent example of this.

From Him come all good things, including such strength and grace to endure hardship. I think, too, of that inspiring quotation by Rumi: What we are seeking is also seeking us...

We are not alone, and I hope your relative's struggle is made lighter by His Mercy. May he stay blessed _/|\_