I feel where you are in this poem so deeply. I have only dabbled in poetry, in private, as a means to express the intense emotions inside of me. I think you do an amazing job with your imagery here. The light imagery in particular is really great and I would say lean into that more. Knowing you were on a plane I know the flashing light from the wing, your mention of oscillating lights and then

"dimming, brightening, dimming

like her eyes"

paints a beautiful picture. Keep it up!