on-line and there is disturbing new information about how she became a radical. >> tweets of 15-year-old amira read like any typical teenager. tweets on her favorite football club, chelsea. >> a very radical process. >> melanie smith of the institute of strategic dialogue mapped how amira turned to isis. >> we can see the process of her becoming more politically engaged. becoming more concerned with syria and finally making the decision to leave. >> smith says the decision may have been last year when a classmate left for syria. >> this is when we see her become more engaged with syria. shortly after, amira's concern increased with frequent mentions of her close friends. then in february, amira posted this picture with them. sisters. four days after posting her