Bucky's shadow {1}

Bucky Barnes had a little sister, but she died when she was nine years old, due to critical health attributes. Rebecca Taylor or Becca Taylor had an older brother. He died when he was twenty for his country. Becca Taylor lives in a world exactly like ours, well except for the non existent fourth wall. A wall supposed to separate the fandom world from the fandom. Becca has admired the actors who play her favorite superheros her whole life, but what happens when Becca meets THE real deal? How will Becca handle the fact that her brother, her other dimension brother, is a hero?