Chung Yoo Ra, 20, was detained in Denmark on January 1 for overstaying her visa after South Korean authorities issued a warrant for her arrest.
Seoul then sought her extradition, which Danish authorities approved. But Chung fought extradition in an Aalborg court.
An equestrian who bought horses and trained in Denmark, Chung said she was only there because of the sport.
Chung's mother, a confidante of now-ousted Park Geun Hye, is accused too of using her influence to secure her daughter's admission to Seoul's Ewha Womans University in front of better students. Several professors are accused of aiding her.
There is also a claim Chung's mother used millions of dollars of bribes from Samsung to finance her daughter's luxurious life.