Your D's obviously under a lot of stress and understandably so Torbaygran. I can understand you being hurt that she doesn't acknowledge the help you're giving; a simple 'thank you' goes a long way doesn't it.
As Feelingmyage has posted "sometimes you have to agree to disagree". Please think carefully before withdrawing the help you're giving them. To do so would only increase the stress she's under and would damage your relationship even further.
Retiring and living frugally in money from downsizing after years of stress
if your recycling or rubbish collections days are Monday,Tuesday,Wednesday
My daughter has split up with her husband

Why does the daughter appear to have mental health issues? It sounds to me as though she's worried sick. She's lost her job, her husband is too ill to work and she's got a mother who appears to be a Covid denier (if I understood the OP correctly). Sounds perfectly well to me; just frightened, worried and trying to keep her and her husband safe.