She does what mature sex women owe to the young guy with the hard cock. Let him know that he is fucking her great by word and deed. If he needs tutoring, she should say "You are so good when you do .... something she wants. Then he will do it. "Oh when you rub your cock head against me clit I feel so horny." Even if she has to show him how and where.
Nur so einen Busch, damit die Zunge auch Haut beruehren kann