One thing I notice here is that the author does not mention if she spoke to the staff at the conference at all. If the staff is not made aware of such behavior,

One thing I notice here is that the author does not mention if she spoke to the staff at the conference at all. If the staff is not made aware of such behavior, there is little they can do about it. I realize that this can be uncomfortable, but, the staff is there to help, and want to prevent such behavior as much, if not even more, than the victim of such behavior.