Recognize when you are being "tested" as a victim and break away immediately
Predators often test a woman’s boundaries to gain proximity and size up her defenses. This can occur in a few seconds or over months. Learn to draw a line, to say NO and mean it. Do not be duped by ploys, listen to your gut.
If you are rendered immobile and cannot immediately resist, act at the first opening
Rape can abruptly escalate to a more violent, life-threatening attack, so you cannot wait to a better opportunity. Take advantage of any sliver of opportunity. The instant he fumbles with his or your clothing, changes positions, puts down a weapon, or prepares to strike or use a weapon - ATTACK! Some rapists initially establish dominance by use of force, so, instead of ineffectually struggling against brute strength, relax and wait or an opening.