Koomson arrived in Chicago five years ago from Ghana, where she lived with her mother and brother, while her father, who works as a valet and Uber driver, worked in the U.S., hoping to bring his family together and with better economic opportunities. After years of living apart, she moved to Chicago and later her mother and brother joined them. And a new baby brother was born last year. “That was like, finally, we get to be together as a family,” she said in their apartment, where she was dressed in pink-and-gray pajamas for her school’s pajama day and about to snack on an after-school meal of jollof rice.