Reply #7: I guess that depends on what she's tried so far.

[SOteric]

Most people allergic to cats are allergic to dander. Do they already have a vacuum with a HEPA filter, and employ it enthusiastically? Do they have an air filter with a HEPA attachment? Have they been letting the cat sleep in the bed with them? Is she the one responsible for grooming the cat?

I understand the nature of allergies, I just have no information on whether or not they're already doing things to minimise her exposure to allergens and still having no luck. Medication is one route, sure, but so are lifestyle changes.