Blindside

At the age of ten Freesia Stovkein's parents were brutally murdered in front of her by whom they worked for: Hydra. Raised by Hydra and trained by their top agents, she quickly became their best operative. Freesia followed all orders given without hesitation and finished her missions.
But that all changed when Baron Wolfgang von Strucker and Dr. List gave her an offer she could not refuse. Forced to be an experiment and endure torture for science, Freesia's hidden anger toward Hydra reached its tipping point. She rebelled against the system that raised her, gave her a purpose, and taught her everything she knows. But, it is the same system that took away everything she had; her life, her family... and her sight. Her blindness did not deter her, though. With the help of the Maximoff twins and her scepter-given abilities, Freesia uses her "disability" to her advantage and becomes Hydra's worst fear:
An Avenger.