Most Helpful Girl
Women tell that info to those they trust the most. She has to really like and be comfortable with you. Usually she wants comfort but everyone wants comfort in different ways. So flat out ask her what can you do to make her feel better and what she wants to do about the situation.
Most Helpful Guy
Shit dude... She told you she was raped, which must be a really hard thing to do, so she must trust you, or at least she believes she knows you enough for her to open up to you. This is like an open invitation to comfort her and show her that you really care about her. Don't say you like her. Ask her how many other people she has told maybe?