Who is Fritzie Kozka in the novel, Fleur?

Pete's wife, Fritzie is "a string-thin blonde who chain-smoked and handled the razor-sharp knives with nerveless precision." She works with Fleur but is not as strong as she, so Fleur is responsible for much of the heavy lifting. Fritzie keeps close tabs on her husband, refusing to tolerate any talking behind her back. A practical business owner, she refuses to let the town break through the meat locker in order to discover whether the men are inside because it would spoil the frozen meats, her and Pete's major investment.