Jane Eyre by Charlotte Brontë Chapter 36 Page 22

“but now I have a particular reason for wishing to hear all about the fire. Was it suspected that this lunatic, Mrs. Rochester, had any hand in it?”

“You’ve hit it, ma’am: it’s quite certain that it was her, and nobody but her, that set it going. She had a woman to take care of her called Mrs. Poole — an able woman in her line, and very trustworthy, but for one fault — a fault common to a deal of them nurses and matrons — she kept a private bottle of gin by her, and now and then took a drop over-much.

It is excusable, for she had a hard life of it: but still it was dangerous; for when Mrs. Poole was fast asleep after the gin and water, the mad lady, who was as cunning as a witch, would take the keys out of her pocket, let herself out