sylvie (dorei to no seikatsu)

The heroine and titular slave of Dorei to no Seikatsu ~Teaching Feeling~.

A young(?) girl with long, black or grey hair, and blue or grey eyes. Her most striking features are the numerous burn scars all over her body, likely stemming from abuse. Obviously, she is very untrusting of the protagonist at the beginning but her trust can be won by headpatting her and giving her new clothes.