We have zip on Bill & Barry's folks, except that they were raised by their Mother, & that she taught them non-Heterodyne-type kindness.

Any hints as to her fate?

Could she still be alive? If so, the Jaegers might not consider her a Heterodyne, & would not obey her. In that case, she would have to go into hiding.--Bosda Di'Chi 17:16, March 26, 2010 (UTC)

The secret blueprints say she died after poisoning Bill and Barry's father. Come to think of it, martyring her sounds like something the Castle would do. Which would answer your other question. --Rej