As a longtime member of Everyman Theatre’s acting company, Megan Anderson has been doing fine work for many seasons, but this past season was an especially sparkling one for her. In Beth Henley’s “Crimes of the Heart,” she was a Hollywood singer who returns home in Mississippi to deal with a sister who shot her husband. Anderson made clear not only the singer’s reluctance at stepping into the quicksand of family and the South but also the suction pulling her ever deeper. In Nina Raine’s “Tribes,” as a young woman losing her hearing, Anderson found herself caught between the deaf world of her boyfriend and the hearing world of his family. You could see every tug at her allegiance on the surface of her telegraphic face.