did you start the relationship with her knowledge of you having cats? did you already have the cat? That's a really serious question because if she chose to have a relationship with you and has this aversion to cats already, then she has no right to complain now, period.

In that case I'd probably reconsider whether you need to find a mate that is more fond of animals or cats specifically even if they aren't a cat owner.

To get into any relationship with the knowledge of things that you don't like, then later start complaining of these things, is just plain selfish and rude.