The horny sister-in-law

I''m a 36-year-old married man. My wife is 34 years old and we have a little daughter aged four. Since the birth of our daughter, our relationship has been kind of a worm in the middle. My wife Stefanie has somehow developed a protective instinct. She wants to save everything and everyone and give advice. Preferably me and the rest of the family. She has a younger sister.Antje is 31 years old and ...