Her Stepdaddy’s Lap ~ Nina Sestina
When the therapist discovers that their younger brat writes explicit fantasies in her diary about doing it hard and without protection with the man of the house, she thinks she might have the perfect solution to fix their marital issues.
Shannon agrees to the therapist’s unorthodox suggestion, and lets Lily sit down on Brady’s lap in her underwear with explicit permission to do whatever comes natural.
It’s only the therapist, the brat, and the man of the house alone in the bedroom, with Shannon listening through the wall in another room.