There's something really special about revisiting old material, Jim. I have a whole folder of piano pieces I started years ago and never finished, and every now and then I'll sit down and play through one and hear it completely differently than I did back then. It's like you've grown as a musician in the meantime without even realizing it, and suddenly you know exactly what the song needs.
A lullaby is such an interesting form too — it has to be gentle enough to comfort but still carry emotional weight. The "lost lover" angle adds this bittersweet layer where the tenderness of a lullaby meets the ache of missing someone. That contrast is hard to get right without tipping too far one way.
Going to give it a listen. I imagine the reworked version probably has a maturity to it that the original couldn't have had, just from the time and experience between drafts.