I am not surprised that a 19-year old girl would rob a bank. Nor am I really surprised that she would brag about it online. What amazes me is that she did so in a video that clearly took some effort to produce. And the captions that she provided for the video demonstrate fairly good grammar, spelling and capitalization. An example:
I just stole a car and robbed a bank. Now I'm rich, I can pay off my college financial aid and tomorrow i'm going for a shopping spree. Bite me. I love GREENDAY!
Nevertheless, the entire exercise was unwise, beginning with her decision to rob a bank in Waco, Nebraska. She's now in jail.