My mother in law lives with my family and has dementia. We have seen things like constant pacing, lost focus, and lack of hygiene. Over the weekend a new behavior manifested itself. We had some family over for dinner. Normally my mother in law goes to bed around seven thirty so we ate a bit earlier to accommodate her schedule. She would not go to bed and kept insisting she had things to do in the kitchen. This went on for close to two hours. My wife kept encouraging her to go to bed and my MIL would say goodnight only to appear again in the kitchen. The last time she pulled out her teeth and started washing them in the dish pan. My wife attempted to redirect her to the bathroom at which point my MIL became very agitated yelling she would wash her teeth wherever she wanted. She never gives my wife any trouble so this was an eye opener. This went on for about ten minutes. Yesterday we had another episode because she insisted she was going to do the dishes which we don't let her do because of the hygiene issue. This episode didn't get to the level of the prior night,but it is worrisome. Normally she only balks at bathing and hand washing. This new behavior has us concerned and we are not sure how to handle it as redirecting her didn't help at all. Evenings tend to be the most difficult times as my MIL is sundowning. Any suggestions ? Thanks.