Oh man, this was great!
So far this is the submission with the best camera work yet. Unity timeline is a very efficient tool, if you know what you're doing, but still, delivering this in just 3,5 days is hella impressive! When the cutscene started, I though "nice graphics, good shaders", but then the animations hit. They are what really sold the protagonist, who feels her power, until the tragedy strikes!
As for the use of the theme- this was awesome. It's not just "5 seconds too late". It shows the full story! I can imagine a game, where this is a retrospective for one of the characters. Like, when you find out the lifechanging moment for her.
Over all- awesome work!