Strong Female Protagonist by Brennan Lee Mulligan

Mega Girl was the best superhero around—until she gave up her lifestyle of punching bad guys and saving the world. Now, ex-Mega Girl Alison Green is trying to live a normal life, go to college, and figure everything out. As she works to save the world without a mask, finish her homework, and attempt to cope with the past, Alison learns that heroism can take many forms.