The title drew me in, and the first stanza floored me.
"Her strained veins
from underneath her
Being able to see veins through ones skins paints an alarming image, a a woman's veins being very pronounced, something akin to an autumn leaf. Veins carry blood, the essence of life so using that to convey vulnerability is appropriate.
"while her parched cheeks
were unable to
her propitious smile."
Even in a dire situation, the subject still is able to smile with hope - a testament to their character. It also offers the readers some relief since they know the subject is not admitting defeat.
became bars enclosing
I absolutely love the imagery of eyelashes becoming a prison. Some say the eyes are windows to the soul, so this saying in addition to what you wrote creates a harrowing image of a person being held captive on the inside.
"Her few tears barely
to an inevitable fate of
'the inevitable fate of evaporation' fits into my theory that the subject is facing internal struggles and it's a matter of time before they run themselves dry.
'So... she prayed for rain...'
and this sounds like a plea of reprieve, waiting on something external to fix or at least momentarily resuscitate the subject.
I really enjoyed this piece, you have a unique way of writing and unique imagery to match :)