Mushaf novel character ideas

Steve and Bucky, Bucky and Steve - but there was always a third member of their friendship. Hope Daniels, girl with mysterious past, and even more mysterious life. The only imprint she left in the history of World War Two was a singular picture of her with Howling Commandos with no signature displayed in Smithsonian, and a sky-blue ribbon in Howard Stark's office. Why? Who was she? The answers, as Tony will find out, only open more questions, with only two people knowing all answers. The catch? They've been labeled KIA since 1945. ~Part One of Stronger than the Fate~ ~crossposted on AO3~