She is in shock. She may also seem calm and collected, behavior that may seem inappropriate in someone who has just been raped.
Attempted rape is often as traumatic as completed rape.
Although the woman may have foiled the rape or the man may have been unable to penetrate her, the aftereffects of the experience may be severe. Treat the victim of attempted rape with the same care as the victim of completed rape. She may not begin in a rush of words, so be patient. Let her know that listening to her is more important than anything else she may think you want to do. Let her tell her story at her own speed.