At first, when the lady stepped into the road, before the counter reached zero, I lowered my volume in expectation of a car crashing into her.
I think we all know that feeling of being afraid to act because it can be too late. So that's a good target, but there would be a bigger impact if they lost the moment during goodbyes (leaving for an abroad school? moving away?).
Your art is minimalistic, and more pastel colors (but not too much) could work nicely.