It could also be that the mom and daughter have some special talents or qualities that the boss admires. The mom might be a great team leader and her daughter could be very creative. The boss wants to incorporate their skills into the company's projects. So, he is constantly involving them in different initiatives. This not only benefits the company but also helps the mom and daughter to grow both personally and professionally.
The boss may be interested in the blond mom's experience. If she has worked in different industries before, he could be seeking her advice for new business strategies. Regarding her daughter, he might be thinking of offering some educational opportunities related to the field the company is in. For example, if it's a tech company, he could arrange for the daughter to attend some coding workshops.
She can be direct and honest. Just simply say what she likes and what she wants in bed. For example, she can say 'I really like it when you do this, it makes me feel closer to orgasm.'