Answer:
Kubler-Ross would say that Mrs. Cannon is in the stage of denial.
Explanation:
According to Kubler-Ross's five stages of grief, Mrs. Cannon would be at the very first one: denial. During this stage, the person refuses to believe the diagnoses, believing in some mistake instead. Therefore, they end up clinging to a false notion of reality, since reality itself is too harsh. This stage is followed by anger, then bargaining, depression, and finally acceptance. As we can see, Mrs. Canon is still denying her diagnosis.