If it's cultural or religious then the company needs to address this before hand, as a preventative measure. According to the civil rights act of 1991 Janet does have a legitimate legal claim - there are laws which cover one's employment relationship regardless of who the perpetrator is if the employer forced Janet into this situation. If Janet is physically or sexually assaulted by a client it depends on country X's law, not US law. US law does not hold on foreign soil. As in Klepner, a stifling climate was developing.
Good companies train managers preventably.
Be aware of victim blaming. Be very careful in dealing with the feelings of all parties. I would ask a well respected sensitive person in the hierarchy of the firm to bring up the issue at a management meeting and analyze if she's really at fault. Or open dialogue. Again find a powerful ally.