No suggestions. It sounds pretty well near perfect to me. Stunning in fact.
I LOVED the slinky key changes - wow! The vocal is beautiful - I assume your wife is a professional singer? She'd give Lisa Stansfield a run for her money.
Excellent song, arrangement and mix. And those key changes...woooh....!

Ok, put a gun to my head and I'd ask for the drums to be louder, but that's just me.

Songs web site
YouTube Channel
Band web site
BIAB 2019
Cakewalk by BandLab
Studio One 4