My Step-Sister Wrecks the Car and is in Big Trouble

When I got home from work I was totally shocked to see my step-sister's new car wrecked in the drive-way, our parents are gonna freak out when they find out. She begs for my help, knowing that I have a friend that could probably fix her car for her. I tell her it is not that easy, she is gonna have to do something for me. I have always thought my step-sister was sexy and now was my chance to fuck her. If she wants my help she is gonna have to let me fuck her, but I am not sure if she can take all of my dick. We quickly find out that she handle it, I flip her over on all fours and pound her from behind before filling her up with cum and telling her to clean up.