Who is Lye from The Girl Who Circumnavigated Fairyland in a Ship of Her Own Making and what is their importance?

Lye is a female golem, an artificial being created out of non-living material - in this case, soap. She was created as the servant and friend of Queen Mallow (see above), whom she serves even after Mallow has been taken from Fairyland and returned to her human-world life as the downtrodden Maud. Lye runs and manages The House Without Warning (see "Objects/Places"), where she washes September in special baths (see Chapter 5) and gives her important information, some of which is lies (hence the significance of her name, and the irony of her having TRUTH carved into her forehead).