Wow! You really do know how to tell a story, even if it is a 'real' story. We all feel the loss because you let us know these birds through your description.
Jackie was older so maybe it makes sense that Shadow would outlive her. He will go on himself to 'rob the cradle', maybe. The cycle of life will continue...more babies, more eagles.
Did the young eaglets return to the nest after they were grown? Do they recognize family? Apparently, in some eagle species they do.
Great pictures
RE: In Memory of Jackie: Lessons from a Nest High Above Big Bear Valley