Anita, your "diet police" reference made me laugh out loud. That is the hat my husband wore because I simply didn't care if I ate or not. He would plug food into my PEG while I slept.

Others have mentioned it, Didier, but we patients can often come to just not care about eating, which is bad, bad, bad. Even worse is when we don't get enough water, which is much more than a couple of sips a day. Dehydration is very serious and can come on suddenly. And about your siblings, it may be that they cannot mentally and emotionally acknowledge that their (your) mom is not always going to be there. It is more than wonderful that you are available to help and worry about your mother. Vent away, as we all understand the stresses that a serious illness brings.
Joanna