Angel's Contract (2000)

Mistreated by Claude, her husband, who shamelessly cheated on her with her best friend Sophie, flees the family home. When getting into a car accident, she is joined by a sumptuous limousine whose owner, the marquise Foscari, a young, gorgeous women offers to house her. But the cynical philosophy of the young woman intrigues Sophie who discovers a mystery. The fact that the heart of the marquise hides a deep secret. During a horse ride followed by tender saphic frolicking, she confides in Sophie, that her sister, who lives in the neighboring house, harbors a wretched hatred against her. Dissatisfied and struggling to destroy her, she leads a life of debauchery and gives into, according to her, disgusting sexual practices.