Instead of Black Canary like @Quiver Said, I would think more along the lines of Ms Marvel (Kamala Khan) . I'm assuming this superhero is a sweet person who just wants to do some good. Also, alot more modest
Just, y'know, No powers.
And, noo nononononono. Punisher? DEFINITELY NOT. Frank Castle is not a good idea. He's a douchebag himself most of the time. Sure, his family got murdered in front of him, but still!
If you wanna go all badass. Moon Knight or Daredevil are probs the best. perhaps you can introduce more supernatural elements, 7 deadly sins (like Shazam) type.
@Deliiiiiightfulif, if it does, become a web comic. I WOULD LOVE TO HELP DRAaaaWWWW