The thing about allergy tests for babies is there are a LOT of false positives. Just being allergic to one thing on the test makes it more likely the skin will react to other potential allergens on the test. Hell, even the fact that her skin was pricked and a foreign substance (any substance) entered her wounded skin is going to cause some kind of reaction.
Babies can grow out of allergies, including cat allergies, especially with long-term exposure. If you see her having difficulty breathing around your cats that’s when it becomes an emergency situation and you may need to consider rehoming them and/or seeking allergy medication from your pediatrician. I would not rehome based on a reaction to an allergy test; I’d just keep it in mind and watch her symptoms.