Who is Josephine Cosnowski, a.k.a. Josie from Wanda Hickey's Night of Golden Memories and what is their importance?

Josephine Cosnowski, Appears in The Star-crossed Romance of Josephine Cosnowski - The new girl in the neighborhood whose family has moved into the old Bumpus house. She is of Polish origin and the narrator thinks that she is the most exotic creature he has ever seen. He dreams of asking her out when she invites him to go to a holiday party with her. She acts as if she is really attracted to the narrator, and seems to feel very secure with him as her date while at the party. It is unknown what her reaction is when the narrator leaves the party without her.