Margene "Margie" Heffman is a character on Big Love, the fictional HBO television series set among contemporary polygamists in Utah.
Morris and Dot's marriage was childless and they had lost touch with Ginger for 25 years and were unaware of Margene's existence.
The most sexual and amorous of the three wives, Margene has given birth to three babies, but she yearns for a sense of purpose beyond being sister-wife and mother.
[1] Margene becomes friends with their neighbor Pam, who doesn't know she's married to Bill and tries to set her up on a blind date.
Margene's jewelry business is successful, though threatened by Bill's plan to achieve a political position, gain the trust of the people, and then out his family as polygamists in an effort to promote acceptance of polygamy.
At the end of the season, following Bill's death, Margene is revealed to be spending most of her time doing humanitarian work overseas, returning only for important family occasions.