Herberta is the daughter of Herbert Moon, the owner of the General Store in the town of Armadillo in Cholla Springs, New Austin. At some point before 1907, Herberta married a Jewish man named named Isaac and dedicated herself to helping the poor, instead of working at her father's shop. As a result, Herbert Moon disowned her, due to his extreme anti-Semitic views.
Little is known about who Herberta Solomons was. However, judging by other characters' accounts of her, it can be assumed that she was kind and selfless. Given that she married a Jewish man, it can be assumed that she didn’t possess racist views like her father.