Shared a bed with a friend’s mom and you can now get married

The girl took her boyfriend to rest with his family to introduce him to his parents and finally have sex. But before the wedding you can’t and a strict mother will monitor the moral appearance of her daughter and spiritual bonds. Having entered the room and seeing that young people are going to not pray, she intervenes in her personal life and the guy is forced to sleep with his future mother-in-law. Or maybe it's for the best?