Brenda Graeber first appears in the quartet as the fastidious housekeeper of David and Lia. Although they don't always like her, they tolerate her stern religious views and obsession with streak-free windows and mirrors.
Brenda claims she loves David and Lia as her own children, and says that she was a dear childhood friend of Angela Sykes. Even Angela accepts her as such.
Brenda Graeber's name is something other than Brenda Graeber. Her archenemy is Nathaniel Ley, although there are many she holds in the same ranks.
She is a major figure in the last chapter of Volume Two.