What do you think will happen?

well i'm writing a story and in one part the girl gets kidnapped by her boyfriend's ex best friend and she is held for ransom considering the fact that the guy is filthy rich.he also has to show up alone for some 'revenge'. the guy who kidnapped his girlfriend likes his girlfriend too.........so, i'm thinking "during her ordeal what will the kidnapper do to her to make her stay an unforgettable one?"