As far as the mix, very close to dead on where I would leave it.
The 'clap' w/ the snare you hear at the beginning is a bit too loud and up front however, I might bring it down a notch and eq it low.
The background 'car scene' sound hitting around 0:33 could be smoothed out a bit, and at 1:13 turned up a tiny bit in volume.
The overall is a bit muddy, so you might attempt to eq the synth sounds a bit higher to add a tiny bit of crispness.
Background whispers could be a tiny bit more crisp as well.
Your daughters voice sample fits the mood perfectly, but I'd see if I could smooth it out a bit, it seems a bit rough on the edges of the wave-form so to speak, compared to the rest of the digitally smooth landscape... Maybe just pass it through a filter a couple times.
Overall, very ambient tune, I like, almost theatrical or movie based background tune. Very atmospheric and emotional.
Added onto my favorites list
W.