Zippy's Adoptive Mother

An unnamed woman was the wife of an unnamed man and the adoptive mother of Zippy.

Biography
At some point the woman and her husband adopted Zippy after he was put up for adoption by his mother, Linda La Hughes.

Both the woman her husband later passed away, leaving they're adoptive son to seek out his biological mother.

Season 3

 * "Secrets and Files" (Mentioned)