This is absolutely beautiful, the accompaniment figure is really engaging and the melodies are very touching, moving even. I agree with DrPangloss on the lyrics, they're very nice and go well with Self-Sufficience. I
love your style and sense of tonality, the chromatic ideas are lovely; the 7/8 works really well, so yeah - overall this is lovely.
I do think if I'm honest though that it could be more interesting maybe if we had just a tiny bit more variation between verses. I think you modulate wonderfully within each verse (especially the repetition of "What do you do"/"If he decides"); but I don't quite feel the second verse should be exactly as light as the first, for instance, and either some key-movement or a very subtle change in the accompaniment figure when it begins again at b.17 might help this. It's just my interpretation but I feel that the lyric is tinged with quite some sadness at the loss of something, even at "a beautiful, wonderful, perfect young man...". At the end as well, there's been a change in the idea being expressed again and the emotion of the lyric - I half imagined a few more bars, and maybe a more substantial modulation than we've yet seen in the song between b.35 and the beginning of the third verse, because it's a big thought process to get from the abstract worry/hope of the first two verses to this incredibly considerate and touching concrete decision at the end. You
do do exactly this very well at "Or could there exist...", but I think more of this would really make this song even more special than it already is. I know this is musical theatre, which I guess I don't know a lot about, but if you look at Butterworth's 'Bredon Hill' (Bryn Terfel's recording is amazing) there's a really good example of how modulation and changes in the accompaniment can help the mood flow from verse to verse. (Okay, I'm sure you don't need me to tell you this, and admittedly in this song the changes in the accompaniment aren't that subtle, but it is a fantastic example of the kind of modulation I'm talking about).
Anyway, sorry for the lengthy paragraph on how it might be improved - I do absolutely love the song, and as it's quite short you might not agree with me that it needs more variation. Just what I thought though.
Are you going to write the musical then?
Please do, it'd be wonderful!