It may be that your allergies aren't worse, they just need a week or two to adjust to her. Fortunately, the allergy shots I had as a kid took care of most of my animal allergies (feathers and guinea pigs are the only things that really get me now), but whenever we get a new foster bunny in the house, I'm sniffly for up to two weeks, and then it goes away.
I haven't seen any literature about dander allergies for declining a specific animal after exposure; I'd be interested to know if it's been tested.
Allergies
I haven't seen any literature about dander allergies for declining a specific animal after exposure; I'd be interested to know if it's been tested.