A Reason to (not?) Wear Flip-Flops

Today as I was meandering down a hall of an althzeimer's unit at a local nursing home where we are considering placing my grandpa, I had a brief and interesting encounter with an elderly woman named Ruby--
Me: "Hello."
Her: "Hi. You have beautiful feet."
Me: "Thank you."
I don't think she actually looked at my feet. Her loss, apparently.