[5] Before beginning that program, she had the role of "Sharlee Bronson", girlfriend of the title character's ward, in Mayor of the Town.

The group was directed by McMillan,[13] and she and her husband, the church's pastor, appeared on camera with an introduction and conclusion for each episode.

[16] In September 1969, McMillan opened Star Way Academy of Drama with students enrolled in beginner, intermediate, and advanced levels of classes.

[17] In 1974, she and her second husband, Ron Cocking, opened The Looking Glass Studio of Performing Arts (LGPSA) in San Bernardino, California with the goal of building self-confidence and self-respect in children, aiding in "the development of the child into a total person", rather than training "primarily for professional roles.

On June 30, 2018, she retired from teaching when all classes at The Looking Glass Studio of Performing Arts transferred to their new Redlands location run by her daughter, Kelly Uminski.

The wedding had Our Miss Brooks connections, as Gale Gordon gave the bride away,[21] Richard Crenna was an usher, and Eve Arden's daughter was a junior bridesmaid.

[27] Six months after her wedding, McMillan announced that she was giving up acting to help her husband in his ministry as he was preparing to enter the Presbyterian San Francisco Theological Seminary.

[29] McMillan directed the drama group of First Presbyterian Church in San Bernardino, California, when her husband was pastor there in the late 1960s.