Dissecting "The Heart Is a Lonely Hunter" by Reba McEntire

Reba McEntire helps us connect some of the dots that comprise the specific mid-90s MCA sound, as she narrates the complexities of adulthood as only she can, in her 1995 hit "The Heart Is a Lonely Hunter".  We relate to the loneliness mentioned in the title, but is that all that's going on here?  And what do major 9th chords have to do with this song's lyrical richness?