Wife was suspicious of some "strange" attitudes of her husband with her step-niece

She always had a flea behind her ear in relation to her husband and his step-niece, because of the way she had all that intimacy, of arriving and sitting on her lap, the exchange of affections and looks that rolled between the two of them inside the house and always in the biggest face in front of her... What made her feel vulnerable in the relationship, that's why every night she started to give in the choir with more desire, even freeing her ass for her husband to eat and thus feel desired by him!