Gillian

Gillian (ジリアン) is a former orphan from the Grand Valley orphanage and a member of the Goldy Pond Resistance who is in charge of the provisions in Goldy Pond.

History
Gillian's sister was shipped to Goldy Pond and she was attacked by Luce. chapter 77 page 7

Escape Goldy Pond Arc
She recalls how her sister was killed. She kills Luce's attendants. chapter 77 page 17