I know ppl are talking about FIV. We just take our cats to get checked and their shots, but they didn't do any tests that I know about anyways, maybe they did they took blood before I dunno they never told me...
Anyways ask the humane society tomorrow what you should do they will know whats she's had or hasn't had... or call the vet... Good luck anyways!! Hope all goes well...

oh I think FIV is HIV for cats dunno though. I know it attacks theit immune system, hope this helps a bit