She probably wasn't the only girl in the world with a fantasy about being overpowered and taken by a stranger, but there was no doubt that hers was a more complex desire than some.
She wanted to be obsessed over, to mould herself into the thing that would drive her assailant wild. If he fantasised about nurses she'd dress as a nurse for the walk home through the park. If he liked sexy secretaries she'd do away with her boring plain suits and wear tight little satin blouses and ridiculously high heels. She'd let him suggest week by week how she should change herself to be what he desired, till she was so irresistible that he'd just have to take her - no matter what the consequences might be for her.
That's why she posted on the bdsm board that wanted to chat with guys in her city, for them to tell her what the most irresistible bait for them to be, knowing that she'd choose one to ultimately make her most depraved dreams real.
There's pretty much no kinks that I wouldn't be willing to include in this kind of scene, but pretty obviously clothing fetishes including latex, exhibitionism, toy insertion, any level of bondage and naturally rape would all be hot hot hot.