Just to keep the facts as we know them straight: she has not lost her job and it was in the elderly woman's home, not in hospital.

As for the food analogies: religion/spirituality issues are more amorphous/intangible and usually much deeper than not liking a certain type of food or unable to tolerate a certain type of food. Granted those allergies are important to know about, but they also are part of the realm of care which a nurse should know about and render. Apples and oranges, really.