Hi, thanks for this thread, it has been very interesting and helpful.
MIL has dementia though I don't know what kind. It is pretty advanced (little speech left, incontinent, struggles to stand from sitting, limited mobility, frequent falls, forgetting to chew and swallow when eating but just stuffing more and more food into her mouth and then choking on it, recently started wandering off at night to be found by police...). I think she still recognises family most of the time, or at least she doesn't get distressed when we visit, though names are completely gone.
She lives at home with FIL, several times a week carers come in and help her get washed etc and interact with her.
Her whole life she was very strict about her diet, and accordingly always thin. Same with her children. Being thin was always very important to her and within the family, being big was seen as a moral failure. At the same time she has always had a sweet tooth, but I believe she found a sort of sense of moral superiority in not giving in to temptation.
SIL, her daughter, is similar, and will strictly police her own children's food intake as well as her own.
The last few times when I happened to visit at the same time as SIL, I observed that SIL now polices MIL's food. SIL will say e.g. 'you have had enough' and take food away from MIL's plate or refuse her a second helping. She has said 'you will get fat if you eat this, you won't fit your trousers anymore and we'll have to buy new ones, you don't want that now do you?'
Now I'm not sure how to feel about this. MIL has very little left that she enjoys and makes her happy, but she obviously no longer restricts her own diet and really enjoys a nice pudding, will happily have a second helping, and perhaps even some chocolates afterwards. I partly feel it is wrong to deprive her of this. At the same time if she had been asked a few years ago, she would have been horrified at the prospect of gaining weight and would have said 'please if it comes to it, never let me get fat!' so from that perspective, I feel that her lifelong values should be respected (even if I don't agree with them). Yet whereas she used to derive pleasure of sorts from being thin, she no longer does, but she does feel pleasure when eating pudding!
What would you say to this, is it right to refuse her treats that she enjoys, for the sake of her 'wellbeing' i.e. maintaining a very low weight?