I Have A Female Friend That Is Age 70. She

I have a female friend that is age 70. She will be 71 next month. She have trouble recalling names of people she has known for a long time, plus has confusion about dates and appointments.Last week, she was sweating profusly and had to leave an event because she said she was just to hot. I noticed her fanning a lot. I am not aware of her medications, so that won't be helpful.