She was originally Draper's secretary, but showed surprising talent and initiative, including a knack—similar to Draper's—for understanding the consumer's mind.
Don promotes her to copywriter, and she eventually accepts a copy chief position with Ted Chaough's firm, CGC, only to find herself once again working for Don following a merger.
Don decides to assert his authority by getting Ted drunk and letting him humiliate himself at a subsequent creatives meeting.
Ted, however, gets his revenge by flying the two of them in his small plane to a Mohawk Airlines meeting despite the rainy, turbulent weather; Don is a visibly terrified passenger.
Elizabeth "Betty" Francis (née Hofstadt, formerly Draper; January Jones) is the ex-wife of Don Draper (who affectionately called her "Betts," or on occasion "Birdy") and mother of their three children, Sally, Bobby, and Gene.