Sorry 'bout that. I forget how tiny these inboxes are. O.O
The main problem is the sheer length. A flashback should be, well, a flash. If you spend too long in the past you lose the action currently going on. While the piece worked just fine as a split-timeframe story, it was split-timeframe rather than a linear story with a flashback. I, personally, would have reorganized the story so that it could be told as one continuous piece instead of chopping it into several, for the purpose of this challenge. I think your story might have been the better one overall, but by the specific criteria I judged by y'all didn't so as well.