>> reporter: carly marquette was not your typical teenage girl. that's her, cage fighting at 18. er, championship swimmer, an honor student, carly could have gone to college anywhere. what was it about westpoint that drew you to that academy? >> just knowing you kind of have your future set, having that structure and discipline, at the same time, having people look at you like, wow, you're doing something great for our country. >> reporter: her sister was a mid-shipman at the naval academy. her father, a marine. to carly, they were heroes, everything she wanted to be. do you think westpoint let you down? >> yeah. i wanted to be there. it was my dream. >> reporter: a dream that was shattered her first year, when an upper classman showed up at her door to talk girl troubles. >> i kind of felt a little cool that an upper classman wanted to be friends with me and was seeking my advice. >> reporter: after sharing a drink, carly says he convinced her to come to his room. since she was an upper classman, she trusted him. >> i remember just getting more and more intoxicated. my judgment r