Doctor catches stepdaughters eating pussy

Two stepdaughter's are having a slumber party where they talk about how life has been. They feel sad because of the break up of one of their mothers. then after a while they start playing truth or dare, and end up having sex. after a while Dr. Beck finds them having sex and gets upset, the girls don't know what to do. Dr. beck proposes to have sex with both of them so she won't tell on them.