I can actually relate to a story simular to this one. My brother had a black one tooth cat, pretty fiesty, for you to pet her, she had to be wanted a pet.
My friend came over to pick me up for work, she was petting the cat (Sheba), I says I wouldn't do that, the dog Tiz has her all rialled up. She continues to pet her, then Sheba turns around and bites her. We went to work then I noticed she had the red line going up her arm. We finished working then went to the clinic, in all they put an IV in her arm and says come back in 3 days. Cat Sracth Fever is real, I do have that song though,"CAT Scratch Fever" I play it once in awhile and will always remember that day.