My mom's cognitive abilities are definitely going downhill. She had a stroke about a year ago that left her semi-paralyzed and in a wheelchair with 24/7 home care. She was always very opinionated/stubborn and some of that continued for several months after the stroke.
She is still oriented in time and place and when she was in the hospital recently she was deemed able to make her own decisions. I'm not sure how she fooled them. I would say she is not. She has become incredibly passive. When I ask her where she wants to go for dinner, she says she's not sure and I should choose. When I ask her if her food was good, she'll sometimes say, "I'm not sure if it is or not." The only thing she has a strong opinion about is wanting to spend most of her time in bed, aside from when she eats or goes out (not very often). She says she's not depressed. Frankly, I would be depressed if I were her. Her QoL is minimal.