The c-word verbal abuse was directed at Cindy, his second wife.
McCain dumped his first wife when he returned from Vietnam. At that time his first wife was in a wheelchair, recovering from an extremely serious car accident. McCain The Hero didn’t like how the accident and the many following surgeries changed his first wife’s appearance.
He started screwing around with many women, but he really liked Cindy and her millions. At age 40 he divorced his first wife and married 25 year old Cindy one month later.
Isn’t that special?
Consistent with character he showed in Vietnam Nam