Reluctant to burden her family and friends with the news , she keeps it a secret for months .
Cathy is a high school teacher who , at the start of the series , has been recently diagnosed with terminal ( stage IV ) melanoma .
Reluctant to burden Cathy 's family and friends with the news , Cathy keeps it a secret for months .
Cathy is a high school teacher who , at the start of the series , has been recently diagnosed with terminal ( stage IV ) melanoma .