Eva was the youngest Stark. Yup. You got it. Tony's little sister. She was like Tony, she was extremely smart, beautiful and pretty much a billionaire. The only difference is she had actual powers.
She could manipulate things, make them move. She had some ice powers too. Eva was gifted. But when Earth is threatened she is to join an Ellite team of people. But apart from a psychopathic God being a little Diva, Eva has a lot on her plate. Her small crush on Captain America and her brother.
Not to mention the other thing.