Pfeffer Spalten vers 2

This is a rare video which is rather strange and hard to figure out. As best as I can tell, the blonde who comes to visit is the niece from the city. She is sexually liberated and has no problem letting her kinfolk know it. She is caught fucking some guy in the barn. The uncle drags her away. The aunt then decides she wants to get laid since it has been a long time. The daughter, Monica joins in without her mom knowing. But mom bumps into her from behind and runs away. The blonde cousin comes back to help Monica get laid. That is the best I can come up with. I also can't find any reference to who is in this video but I am 99% certain that Renate Ruhland plays the mother/aunt.