Stepmom discovers her stepchildren fucking and decides to join in

They had been sharing a house for two months, since their parents had married, they had become closer than they had imagined, no one suspected that this closeness meant something different for both of them. Whenever they could, they escaped to some hidden place to touch each other, and each time they were closer and closer to surrendering to sexual pleasure. That day their desire to kiss and touch each other grew stronger and they started to do it in the kitchen. At that moment her mother saw them. The woman didn't know what to do, her sons were doing bad things but she couldn't help but feel horny.