My 70 year old mother doesn’t want to leave the house despite being fully vaccinated because it’s hard for her to breathe in a mask. How much of the rest of her life does she need to be a shut in?
She should see a doctor about underlying medical conditions if she finds it difficult to breathe through a cloth mask.
Why do you assume she hasn’t? Not everything is fixable, especially as you get older.
It would be assumed that she hadn't seen a doctor about it because she wouldn't have to wear a mask if she has a legitimate medical condition