Not-So-Sneaky Snuggles

River Lynn had invited her best friend Gal Ritchie over for a routine girls' night in, setting up cozy comforters and cushions in the living room. River's stepmother, Annie King, unexpectedly dropped by and was thrilled to see Gal. After a quick chat, Annie suggested joining in on the fun.
River and Gal readily embraced the idea, and Annie slipped under the covers with them. Later that evening, the atmosphere took an unexpected turn as River caught Gal and her stepmom engaging in intimate activities beneath the blankets. It was a revelation that they had been discreetly involved in a romance right before River's eyes.
Without agitation, River proposed a course of action to let bygones be bygones by transforming their clandestine intimacy into a provocative threesome.