Parenthetical phrases are becoming a definite part of contemporary poetry and you've employed it well. The singular "(it might)" is quite punctual in and of itself.
Verb choices of individual sound yet similar thought-provocation play well off each other -drawn up/curled-up-
Word choice continues to impress with the beat consideration, the impact it has on the speed of the reader while reading, slowing the thought down, forcing a closer and deeper consideration -Distant siren, whispering shrill- 2-2-3-2 has a dramatic impact, subtly.
There is a consideration further through the poem, keeping the whole time a position of speaker to listener. Good poetic distance, a certain "big speech" we get taught how to read, the things inherently known to be important, though not known how or why. Powerful combinations. More good work, obviously a poetic soul.