WarDragon's Way of the Wicked
Bianca DeVallya is a half-elven woman captured during the attack by Hallack’s Crew upon The Horn. She was forced to watch the man she loved, Hallack Amon, die horribly at the hands of the Nessian Knot. Subsequently she became a willful and resistant slave until the capture of her friends from Farholde.
After Gaerlan Cimo had them tortured in front of her her spirit was broken, and she became his personal servant. Though blind, she lends her musical talents to Gaerlan when he relaxes, serves food, and otherwise does whatever is asked of her.
She is kept magically blinded.