J. Courtney Sullivan is, just like each of her engaging and multifaceted characters in “Commencement," far from two-dimensional. In our conversation, she tells me stories about sending copies of works by feminist activist and scholar Catharine MacKinnon anonymously to boys after a terrible first date, and refers to her expression of newfound political views in her younger years as “really intense.” She also speaks candidly about publishing “Dating Up: Dump the Schlump and Find a Quality Man,” a self-help book which she says “I don’t know that I can make a feminist argument for,” in 2007, in order to “get my name out there.”