She obeyed.

She carefully chose the farthest chair in the room and took a long time bringing it over to where her mistress sat waiting.
"I've been working for you for twenty years," she muttered.

"I've been your goat for twenty years and I've got a right to speak my mind--" Miss Cornelia cut her off.

"You haven't got a mind.

Sit down," she commanded.
Lizzie sat--her hands at her sides.