Brad,

Sorry for your loss. There is no greater loss than that of a child.

A heartfelt write.

The vocals and harmonies are nice. I think they are a bit too-up-front - or, perhaps "on top of the mix" might be a better description.

A few "suggestions" - opinions, of course, so take it with a grain-of-salt...
The pedal steel is pretty busy and becomes "overused" (partly because of that "busy-ness"). You could try alternating a fiddle once in a while. Or try a different steel. The newer steel RTs are typically more "background" steel (less busy). The earlier BIAB steel had a tendency toward a lot of playing. Also, the steel is the most dominant instrument in your mix. It could be softer.
Your drums are pretty low volume. They have a volume similar to the way drums were mixed in the very early 70's. Since then, drums have gotten progressively louder. To the point that today, they are typically the dominant sound in a mix. And we have become accustom to hearing them like that.
The acoustic guitar gets lost shortly after the opening. The BIAB acoustics are generally heavily mid-range-y. To get them to cut through the mix, you can EQ them to bump up the high end some and eliminate the low end altogether (cut everything below 200, bump up everything above 2K - for starters).
All suggestions/opinions, as I said...

Keep 'em coming!

fj