Newport said later that the effects of CO don't stay for long so it was important to have doses throughout the day.

Use organic, refined CO and mix it with butter, put it in a container and let her spread it.

To get her to give up carby stuff more easily, go to Maria Emmerichs site and check out her bread recipe. It looks like bread and tastes better than GF bread.
There're many recipes that'll help including jelly made with tea.

Changing the diet of someone with dementia can be challenging since you may get verbal agreement but because of the dementia, it may not carry over at meal time.
That is why it may be easier to switch out recipes.