The death of Shamiya, whose mother had rarely let her out of her home because she feared for her safety, is being cited by some as a symbol of the violence that has again gripped America's third-biggest city this northern summer.
"If you can't even be at home, where can you be safe?" asked Terrence Redmond, her 32-year-old cousin.
Two federal agencies, the FBI and the US Bureau of Alcohol, Tobacco, Firearms and Explosives, announced plans to send additional manpower to Chicago to assist its police department over the remainder of the summer after the July 4 holiday weekend, during which 82 people were shot - 17 fatally - in four days.
Chicago's mayor, Rahm Emanuel - the former chief of staff for President Barack Obama - has been claiming that violent crime has declined since his election in 2011. Overall homicide rates could be lower than last year and will certainly not match those of the 1990s.
But such statistics will be little comfort for those now on the front lines of the violence.
"The familiarity of laughter has been replaced by the familiarity of gunfire," Emanuel said after Shamiya's death.
Also during the weekend, 24-year-old Richard Velasquez, was shot in the chest and killed in a bar on the southwest side of the city. Another man, 21-year-old Jaquan Hard, was shot in the head and killed as he and a friend got into a taxi on the West Side. The friend and the driver were wounded. A fourth victim was found dead in a car in an alley frequented by gang members.
Emanuel has been trying to get the Illinois state legislature to pass stricter gun-control laws. While Chicago has taken steps to restrict gun sales, police say firearms flow in from dealers in southern Illinois and neighbouring Indiana.
Facing an election next year, Emanuel has seen his poll numbers sink this year, particularly among African-Americans, a vital constituency if he is to serve another term.