Who is Doris Levine from Without Feathers and what is their importance?

Doris is the young, attractive philosophy minor that Hepatitis calls up from the audience to help him answer a few of his more nagging questions. Being from beyond the third wall, Doris represents a disruption to the play. She is, with her attitude as well as her beauty, the outside factor that throws the play off kilter. Doris is the only character in the play-within-a-play who isn't assigned another name. This suggests that Doris, who exists outside the context of the play, also exists outside the context of the second play.