Heroes and Villians

[very long description]Everyone knows about Steve Rogers. How his dad died during the first world war, how his mom died when he was a young adult, and how he was a sickly kid who was chosen for the Project Rebirth program, but they don't know he had a sister... well, a half sister.
Jovie Lynn was Steve's half-sister from his father's first wife, who died from measles in 1915 shortly after giving birth. Joseph remarried Sara in 1916. Sara raised Jovie as her own daughter, and in 1918, Steve was born.
Jovie grew up and became a nurse, following in her stepmother's footsteps and as a way to help take care of a sickly Steve. Jovie dated her brother's best friend James "Bucky" Barnes, the 3 of them becoming known as the 3 musketeers.
When war broke out, Jovie joined the Army core of nurses and assisted on the Project Rebirth that made her brother into a super soldier.
In 1945, Jovie lost first Bucky on a mission when he fell from a train, and then her brother, when he crashed a plane into the Arctic.
She mourned, but life went on. She left the Army Core of nurses and married a steel worker after the war named Richard Rose. She had a son in 1957, and she named Steven James Rose after her brother and first love. Steven married a Lakota Souix woman named Violet Whitefeather, and they had a daughter named Lynn after his mother, Jovie Lynn.
Fast forward, and Lynn is a nurse working for SHIELD when they find her great uncle... alive in the ice...
Task with getting Captain America assimilated to the present day as his only living family member Lynn is thrusted into a world of heroes and villains, but nothing is black and white....