Pratically overnight, she has made the transition from not much to say, but kind and obliging when spoken to or reminded to do something she needs to do, to this bossy, critical, demanding, snarky, impatient, uncompassionate person. She now tells me that "everytime we have a conversation it ends up in an argument", I have no clue what she is talking about here and told her I felt this was a gross exageration, and "you are asking me unecessary questions", telling me that I am basically not allowed to ask her any questions that she deems unecessary, and my personal favorite, "I am tired of being asked what I am doing, or what I am not doing, or being reminded what I should be doing, or should not be doing", to which I replied would she prefer that I not remind her to drink her water, take her pills, eat, etc? She said no. You can see my dilemma. Am I supposed to let her be and let her flounder about so she can feel independant and on her own? This roller coaster ride is not fun for me.
You say that she can do more for herself than she does. What is the nature of her disabilities?
What is she like when you talk to her and it doesn't have anything to do with what she should remember or be doing or not doing? For example, if you sit and talk to her about what it was like when she was rasing your sweetheart, or whether cakes from mixes are as good as cakes from scratch, etc., is she pleasant then? Does she have other adults to interact with once in a while? Does she go to church or the senior center or an adult day program?
Sorry to have more questions than an answer, but more details might spark some additional suggestions.
Of course she doesn't recall her snarkiness yesterday. She has dementia, remember. :)
Setting boundaries with someone who has dementia is very different than doing the same thing with someone who has no mental impairments. Letting her skip meals is not going to teach her to remember meals. If she could do that, she would be doing it. She may remember the meal she had on her 9th birthday, but she may not remember whether she has eaten lunch today or not. It is not her fault. Can't you just give her lunch while chatting about something pleasant. "Here's a nice grilled cheese sandwhich. I loved those as a little girl. I wonder if your grandkids like them?"
How about making the bed with her, or having her son do it with her? Making a bed takes more than physical ability. It is a process of many steps, which must be done in the correct order. This is beyond many people with dementia. Depending on what kind of dementia she has she may have visuospatial impairment which would make it very difficult to put dishes in a dishwasher and do many other tasks that she seems like she should be capable of.
If the pills are not important to her well-being, I'd stop buying them. If she benefits from taking them, then letting her fend for herself with them would be, to my way of thinking, cruel.
Could you minimize the amount of talking you do about the help she needs? Don't ask her if she's taken her pills. Take charge of her pills and give them to her each day. Serve her lunch. Give her a nice glass of water or occasionally lemonade or gingerale, and give her another one when that one is empty. She does not like the fact that she cannot remember these things for herself any more than do you. If most of your talk is about pleasant things (Mark's past, the grandkids, her childhood, your childhood, etc.) and you do minimal talking about what she is doing or should be doing, maybe she'll relax and be a little less snarkly. (And maybe not. It is worth a try, though.)
Please, have her evaluated by someone who won't be fooled by her showtime efforts. Give that someone a thorough description of what she is like at home. I think that all three of you would benefit from an official diagnosis, and an appropriate treatment plan. Then you and Mark can read up on how to cope with dementia behaviors, and you can also begin to think ahead about how you will deal with the inevitable progression of the disease.
I agree. This is a roller coaster ride that isn't any fun at all.