Hi, I was a geriatric care manager for over 25years and, unfortunately, your situation is more common than most people realize. I would suggest that you either call or write a letter to her primary care doctor expressing your concerns. Yes dementia is a possible, even probable cause of her issues but depression and other illnesses can also present with dementia like symptoms. Either way she is dealing with something that will only get worse if not addressed. There is no “cure” for dementia but there are medications that can slow the progression and if it is a different illness then perhaps it could be treated as well. I agree that suggesting that you accompany her to a doctors appointment is a good idea, especially after you have spoken to or written the doctor with your concerns. The primary care doctor can conduct some early testing and perhaps refer her to a neurologist to try to get to the bottom of the problem. There are also support groups for caregivers that can be extremely helpful for you and can offer you other ideas. Alg.org is the official Alzheimer’s association website and lists support groups in your area and perhaps you won’t feel so alone. Your local senior center may also have support specialists that can help refer you to resources. She is very lucky to have you in her life as someone who is noticing these symptoms and willing to try to help.