Not Your Backup by C.B. Lee

Emma Robledo has a few more responsibilities that the usual high school senior, but then again, she and her friends have left school to lead a fractured Resistance movement against a corrupt Heroes League of Heroes. Emma is the only member of a supercharged team without powers, she isnt always taken seriously. A natural leader, Emma is determined to win this battle, and when thats done, get back to school. As the Resistance moves to challenge the League, Emma realizes where her place is in this fight: at the front.