Speed Demons (Gender Swap Heroes #2)

Dr. Alan Bassett was a brilliant scientist, loving husband, and caring father. Then an alien artifact explodes in his lab and turns him into a beautiful young woman with the ability to run at nearly the speed of sound. As Allison struggles with her new identity and abilities, she starts to learn what it means to be a hero. But when an enemy from her past shows up, bent on revenge, Allison will have to risk everything to save the world.