What is the summary of the prologue in the play, August: Osage County?

The play begins with a prologue, which consists of a conversation between writer / professor Beverly Weston and Johnna, the young Native American woman he is interviewing for a position as housekeeper. Beverly, who may or may not be somewhat drunk, refers to the difficult relationship he has with his medication-addicted wife Violet, who interrupts the conversation, behaves disrespectfully to both Beverly and Johnna, and then withdraws into a pill-induced sleep.