I looked after a lady like this once...(a bit older- short term stay) she was great, usually falling up the stairs on her way to bed with her glass of gin and tonic..
"Do you want me to help you with that?"
"No, No, I'm fine"...(Stoic, English eccentric...)...splosh.
We went for a long rambling walk in the countryside around her house and she was very keen, thrashing through the undergrowth with her stick... We had a lot of fun.
I didn't tell her family about it.