Certainly! Here is a more expanded and polished version of the text you provided:
"In the eerie outskirts of a heartless city, Catherine ekes out a living through bits of translation assignments. However, her mundane existence takes a thrilling turn when a cryptic patron presents her with a well-paying task, opening the door for Catherine to delve into her twisted and conflicting yearnings."
I hope this revised version captures the essence you were aiming for!
