The character "Janet Cooper" is American, but Daisy Betts, the Australian actress who portrays her, betrays her linguistic roots when she speculates that Erika might be "in coma." An American would have used the indefinite article and said "in a coma." Inserting definite and indefinite articles in such phrases as "in the hospital" or "in a coma" is a linguistic characteristic of American English. In British and Australian English, it is a linguistic characteristic to drop those articles in such phrases.
While arguing with Mark in her office, Kat says, "I could've cared less that you were married". The correct phrase is "I couldn't have cared less". An often made error.