Complex sentence: As for her working relationship with Brando, she said that, while their relationship on the set was paternal, Brando suggested the sodomy scene, in which he used butter as lubricant with her.
Split into simpler sentences: As for her working relationship with Brando, she said that he had a paternal relationship with her on the set. But Brando had suggested the sodomy scene, in which he used butter as lubricant with her.