Last year, Gaby Gonzalez wore black nail polish and black eye shadow. She had a messy room, standoffs with mom and occasional drinks. Today, the Honduran-born 20-year-old is known as Sister Gaby. She proudly wears her jade-green hijab, which forms a nearly perfect frame around her delicate features and large brown eyes. She prays several times a day and does not wear makeup, eat pork or even utter the phrase "happy hour" – that is all haram, she said, or prohibited in Arabic."In my past, I focused on myself. I didn't think about other people, about my parents, just myself...