Spectacular
That was very good. I love the world she lives in, since it's so odd, yet she doesn't even notice.
I think I've already figured out the story though.
Based on what I saw, I would assume she's in a dream world, her own and that in real life, she's in a coma. The call on her cell phone that she recieved was her boyfriend/husband talking to her while she was in the coma, which was why he was saying "If you can hear me, I need you back." She lives in her dream world and doesn't notice the oddness all around her because that's how it is when you dream. You don't realise how ridiculous things are until you wake up.
The last thing I have to ask is are you perhaps taking a page from Silent Hill with the siren thing? It seemed very much in the same tone, with the blurring, ringing noises, fainting and sirens and stuff. I hope so, because it will make this flash even better.
I'm very impressed, and though I think I have the story figured out (except for the ending of course) I'm excited to see what happens next and if I'm right or not.
Great job.