Marianne, "a niece of Austen's, '' recalls the memory of Jane sitting quietly in the library Godmersham, her sewing on her lap, saying nothing for a long time. Suddenly Jane would burst out laughing, jump up and run across the room to find pens and paper and write something down. Then she would return to her fireside seat and go on stitching quietly as before.
From: Obstinate Heart: A Biography, by Valery Grosvenor Myer, 1997
The quote is from this review: Jane Austen: As Rich a Mix as Any of Her Women, Christopher Lehman, New York Time, April, 1997