If she's dead and Cap's first scene opened with him visiting her grave, for some reason I think of Bond at Tracy's grave in FYEO.
Also the, scene with the radio playing a Brooklyn Dodgers game that Steve had attended was a great touch. I wouldn't mind a scene in Avengers or in Cap II where he happens to be at the Jackie Robinson Apartments on the former site of the Brooklyn Dodgers ballpark, Ebbets Field. Just a little reminder that so much of what Steve knew is now gone. Originally, 20 years had passed and yes, a lot can happen in 20 years-but 70 years is a drastic difference.