Do you think three men would admit to dropping her off at her hotel if they had no connection to her that night (remember the hotel security camera does not show them dropping her off) ?
Do you think she was not raped (and/or tortured) ?
Do you think she is still alive ?
I didn't say they have no connection to her or what may have happened to her. I don't know what happened to her and I don't think you know, either. She may have been raped/murdered/torutured/sold into slavery/run off on her own/kidnapped/whatever. You didn't say you fear she was raped and murdered, you said she was raped and murdered. If you know that to be the case, I suggest you contact authorities because you obviously have more information than they do.