How can they say we have no faith since our loved one isn't healed? When Jesus went to the pool of Bethesda there was a multitude of those who were sick, blind, lame and withered. Yet He only healed one of them. Did the entire multitude fall into the ranks of the faithless? I think not. To me they had some measure of faith just to be there waiting for the troubled water...
I propose that those who are in extremely adverse situations have great faith. Come on, give yourself a break, you're still believing in Him and looking to Him as your source aren't you? Then you have faith- you still believe in Him!
As a caregiver no doubt there has been some sort of earth shattering tragedy on some level that has put you in your present circumstance. Isaiah 54:10 says this:
For the mountains may be removed and the hills may shake,
But My lovingkindness will not be removed from you,
And My covenant of peace will not be shaken,
says the Lord who has compassion on you.
Even when our world is shaken, He is not moved. Even though we cannot live the normal life, He has not forsaken us, He has not moved away (like it seems others have), He doesn't look at how our world fell around us to see if He will stay or not - He cannot be moved! His lovingkindness cannot be moved away from us. And actually, I think that this is what sustains us! Let His lovingkindness under gird you today. Rest in Him, trust Him! He cannot be shaken and is never moved by our circumstances.