I just want to echo what Drizzlin said. Please don't let your 2 years, 5 years, 10 years whatever martial arts training create a false sense of invulnerability. I too have trained for over a decade in various forms of karate and BJJ and in this entire time I have looked at this training as a means of creating space to get away. It especially alarms me when mothers have an impression that their daughters should have anything else in mind when in a confrontation other than getting away. Any sensei that hints their student should be looking for another outcome than this should have their coaching licence revoked.
If the life of myself or someone I care for is in danger, or I felt for one second they planned on taking more than my personal belongings, I would kill them. End of story.