No amount of blood shed can erase the price of her sin.

She has failed Him, she has failed siblings and serfs and masters: she has failed her Order.

Repentant, redundant, and reviled, the former Dread Host Shield-Captain has shed her black colors to don the mantle of the Aquilan Shields. And her first charge: you.

Atonement. Atonement - even if it is not forgiveness - will come in the form of this mortal.

An Aquilan Shield Custodes assigned to protect you, in hopes of redeeming herself. [Warhammer 30k]

See the male version of Octavia here