My mom repeats herself often. Sometimes hearing the same story within minutes from the first. She's from a timid nature to a more bold no filter. Which actually has made me proud of her standing up for herself but she's flirty... And that takes me by surprise. She fixates and that can get scary. But all the while she's productive. She works but they've cut her hours and made her tasks lighter. She's my best friend. I'm worried because my grandmother passed away from Alzheimer's at 75. My mom is 69. Her doctor says she's just aging even after presenting all the facts she still tells my mom she's just aging. What is this?