My wife's dementia seemed to coincide with her son's massive and debilitating stroke. Frequent falls do not deter her drinking and she confidently demands more alcohol when she wakes from a brief nap after each episode. Despite my efforts to get her to the doctor, her confidence deceives him or she cancels the appointments. She is proud to remind me that he told her she was so healthy she would live to be 90; "Come back when you get sick". She forgets what day and year it is, recounts all of her life and love history to as she drinks; can be belligerent screaming "I hate you". Her mother was diagnosed with Manic-Depression and her daughter recounted how she walked on egg shells to avoid her mom's anger. Current medications include Levothyroxine for thyroid (137 MCG), Paxil for anxiety and depression (40 MG) and Trazodone (100 MG) for sleeping.
Best of luck to you.
It's not unusual for married couples to have POA for each other. You'd have a lot of rights as a spouse, but much depends on how you've set up your assets. I'd speak with an attorney, soon.
Good luck,
Carol