Those people may well have stereotyped her, but when she fails to speak up about it and sits there silently giving no indication that something is wrong, what would you expect. This isn't kindergarten. These people don't get paid to read minds. What it sounds like, is at least part of the time these people genuinely thought they were helping her, and she gave no indication yo the contrary.
She is not a professional, pure and simple. If you aren't a professional, then what are you doing at E3? What are you doing in any situation where assertiveness is expected in order to get your job done?