The Third Mutant (Captain America story)

Jessie Smith was always a normal girl that never got in anybody's way. That is until she's seen as a prime candidate for HYDRA's next experiment.
She's pushed to breaking point until she mutates and gains superpowers along with Pietro and Wanda Maximoff.
Jessie gets out, set to warn anyone that she can about the threat that HYDRA poses to the world. This is her story.