It's an interestingly unique idea and it starts brilliantly.
Then it totally falls down half way through. It doesn't know what it is, what it wants or where it's going. Then we get to know. But it's not well-flagged. Can't say much more without the spoiler tag but it just doesn't hang together well.
Some observations:
The mother is annoying . Really! No sympathy for the character at all and, more annoyingly, she has absolutely no impact on the storyline.
In an attempt to add 'pace' there are a few long sequences which don't mean or do anything.
And they throw in a little past-life psychology for one of the main characters, in an attempt to add weight.
The actors are fine - Mae Whitman in particular is brilliant!
Potential, potential potential. Squandered, squandered, squandered.
Yep, (co)writer/director. I really should have learned by now but was momentarily wrong-footed because the director's name appears second on the writer credits. Oy vey.
As a movie, it's vastly overrated and rather under whelming. Shame.