We can pray in faith, while desperately wondering if there can ever be relief from anger and disruption in the family home. Why God sometimes restores, and other times decides instead to give a person strength to cope within the difficulties, I simply don't know. I have absolutely NO idea. It remains as it did when Jesus was here. Funeral directors still have work.
Hospitals are full.
Chronic suffering from disease still occurs. We need to learn to recognize them. To give thanks when they come. And to dare in faith to ask. Remembering, of course, that if God chooses to answer differently than we hope or desire, that is His divine prerogative.