Mom has dementia but yesterday she was adamant her mother lives with her. We didn’t argue or correct, just kept redirecting & finally told her that she was staying with my sister the night. She reluctantly accepted that. We asked our usual UTI, stroke assessment questions. How many children? Their names, her dogs name, the holiday that just passed. Even asked her what year it was & she guessed 2017. Also her age, 89. So she wasn’t lost in her past & she wasn’t confused about anything else. Normally short term memory is gone no recollection of eating, drinking or visitors or phone calls but she’s always known her mother passed 60 years ago & her father 32 years ago. She’s never mistaken her home of 58 years with her childhood home. She’s never asked about deceased relatives or relatives out of state. This was left field, because she was on point on the other information. Still possible UTI? Just normal progression?