Mom decided to play along with the youngsters, and hook up with them for general sex. Otherwise they wouldn't have done anything in front of her. The incest turned out right in the gym. Basically, the young lady corrected the action and was on top of her daughter.
A lot of girls wouldn't mind getting that kind of medical care! But they just don't meet these doctors, and they are too embarrassed to ask to have it added to their medical records. Look at the fervor with which she is treated in the 9th minute of the video, I even wished I had gone to medical school myself.
Yes, when a woman wants to fuck there is no stopping her, and the presence of a standing penis only warms up the situation.