Sister of the Captain

Being the sister of Captain America, isn't an easy job as you have thought. But, let's ask the obvious question here first. How did this happen? Yes, she was born in the 21st century, and she's also the girlfriend of Peter Parker. But alas, this is not the only thing about Gwen Stacy. In fact, in the past, she was known as Gwendolyn Rogers; sister of Steve Rogers.