Grace(Alley Cat)

Grace Rogers is the twin sister of Steve Rogers. She joined the SSR while her brother joined the army. She was on the train when Bucky fell. She fell too. Miraculously, she survived and was captured by HYDRA. Just like Bucky, she was trained to be the world's deadliest assassin. She was experimented on, tortured, trained, and erased. One day, she escapes and finds herself in SHIELD. As the highest ranking SHIELD agent, she works with Tony Stark often. So often that she married him. What happens when Cap is found and Earth is threatened by a greater being?