Henrietta was an ordinary housewife, describing her past-self to Sue as poor, fat and with no sense of style. She invented a plastic "burping" bowl. ("Burping" referring to the sound of escaping air upon removing the air-tight plastic lid.) She founded Plast-a-Ware, eventually becoming a millionaire and retiring to a mansion.
While in high school she was apparently impregnated by her choir teacher, and sold her baby.
She is on a first name basis with Vivian and used to work in the office at Plast-a-Ware, but now sits at home enjoying the revenue from sales. She mentions that she was pushed out of the company, relegated to a figurehead, and is eager to use Sue's Salad Tosser as a way of getting back in and being taken seriously again. This is partly the reason she winds up attaching her own name to the product, leaving Sue without any credit.
Henrietta in general is a very crass, rude, slightly racist, and eccentric old woman. She collects antique monkey paws, and claims she never goes anywhere without one. She also tells Sue and Vivian that she slow-clapped when John F. Kennedy was shot.