Just got back from the vet. Took some x-rays and determined that it is osteomyelitis in the spine, and the swelling from this is pushing outward on that rib. Good news is some antibiotics should treat the infection and she should live a full and happy life. Bad news is the damage to this point has been done and is not exactly reversible therefore she will not be a breeder, which is fine since I had already come to that conclusion when I thought it was a kink.