Date rape (also known as acquaintance rape) is a form of rape in which there is a potential romantic or sexual relationship between the two partners in the moment the sexual assault occurs. The perpetrator uses physical or psychological intimidation to force a victim to have sex against his or her will, or when the perpetrator has sex with a victim who is incapable of giving consent because they have been incapacitated by drugs or alcohol.
The reasons what you have given are valid because in the circumstances like India, the women are victims on both the fronts i.e., victims of such incidences as well as victims of social fears or wrath of society when such issues come to light. Hence most of such cases go unreported and the perpetrators do such crimes increasingly.
If she has decided to take legal action against the culprit she has to appear before the court for deposing evidence, however if she so desires, she can have an in camera trial too wherein she can express the fear of confronting the accused and the court may allow her to be heard without the presence of the accused.
That will happen during trial, now arrange to lodge a complaint and register a FIR on the basis of available evidences.