Vaner,
Not knowing all the details of when it happened and how long you've known her makes it difficult to give sound advice.
All of the previous posts are good advice, but I think you need to carefully analize your own feelings for the girl.
Did you have romantic feelings for her before the incident?
What are you're true feelings for her now?
Many here may not realize, as I'm sure you do , the social stigma for a Muslim women over an incident like this.
If you have romantic feelings for her, you must consider the emotional investment you are willing to make and the likelyhood that it will not turn out well for you in the end.
If your feelings are platonic and you really want to help only as a freind than commit yourself to helping her and showing that men can be trusted.
Either way, you should advise her to seek proffesional counciling, especially if she is openely talking of suicide.
This is a traumatic event for any women, especially a Muslim and she has to deal with many feelings of fear, shame,trust, and depression.
She needs help, probably more than you can offer, and you are a good person to want to offer it.
I only suggest that you consider your own feelings carefully before you invest them all in hers.
Good Luck to both of you....