City Without Heroes — Tanya Lisle

Whitten was just what Indira hoped for. It was a city that had banned heroes and villains, which meant no more rebuilding her home after a disaster, no more texts from her mother about how her father had been kidnapped, and no more worrying that she might be forced to become a hero herself one day. Indira soon finds out that the city holds a dangerous secret. Keeping superheroes and supervillains out of the city comes at a cost and, if she isn't careful, she may disappear with the others.