Those Uncaring Waves
Novella 18,140 words
"We are very, very disappointed.” It was her third try, and it still came out feebly. “We thought we made it super clear that any, any change in material, maker hand, machine, or method, however small or irrelevant it may seem, must be notified beforehand.” The proprietor scratched his head. “I really don’t think—”
Content warnings 3
body-horrorchild-abuseself-harm
Quasar links out; the story lives on Clarkesworld, where the author gets the click.