Reading through your comments a thought that perhaps you haven't considered. The wife and I care for her mother, who is now entering stage 5. We wish she would tell us how she is feeling in order that we may be able to help in some way to perhaps improve her situation. When ever we ask we're told "Oh not so bad" when that is obviously not the case. At times ignorance certainly isn't bliss I can assure you.
No loved one, worthy of being called so, will mind how much you tell them of how you feel. Often being made aware will help them to be more understanding and tolerant of the condition rather than the contary.
This may be regarded as total hogwash, but in our experience, it's the truth