Mrs. Shen next door left a key in my shoe box

【Fictional adult story. All adults.】 Mrs. Shen is thirty-four, eight years married. The day the key landed in my shoe box, someone was burning leaves downstairs. She does not talk when she comes in. Heels off. My hand on her stomach. Curtain half-drawn. Husband on a trip, she says, and bites my lower lip. Every visit she turns the ring once and leaves it in the hall. We never use the bedroom. O