For 10 points, name this woman who sleepwalks and tries to wash out a "damned spot" on her hand after urging her husband to kill King Duncan in a Shakespeare tragedy.
The momentary transfiguration of this woman and her husband was the subject of an essay by de Quincey whose title refers to the arrival of Lennox at her home.  After a character asks her husband why he has killed the horse grooms, she faints. At a dinner, she tries to reassure some guests by telling them that her husband is subject to fits after he sees a ghost.  Her death is announced by Seyton, prompting her husband to remark, "Out, out, brief candle!"  For 10 points, name this woman who sleepwalks and tries to wash out a "damned spot" on her hand after urging her husband to kill King Duncan in a Shakespeare tragedy.
The momentary transfiguration of this woman and her husband was the subject of an essay by de Quincey whose title refers to the arrival of Lennox at her home.  
{Lady Macbeth}