Gaby remembers the first time she threw up while taking a test. It was a few months ago, early on in her freshman year at Marblehead High School in Massachusetts.
She was sitting in biology class when, she recalls, she got so anxious that she excused herself to the bathroom.
Gaby typically starts her day at 6 a.m. and gets to school at 7:15. On Mondays she runs a government club called Junior State of America. She's also running for class president, sits on the women's rights awareness group, and helps out at the school's rotary club.