Describe Miss Betsey Trotwood from David Copperfield.

Miss Betsey Trotwood shows up in the beginning pages of the novel before David is born, and she doesn't appear again until David runs away to her. David initially learns about her through his mother, who seldom speaks of her. David's sweet, young, innocent, recently widowed, and pregnant mother, Clara, is intimidated by Miss Betsey. She calls Miss Betsey a "formidable" person.
Miss Betsey is David's father's aunt, making her David's great aunt. She comes across to David's mother as assertive, bit bossy, and eccentric, and she is also critical of David's mother, calling her a "Baby" and saying the "Rookery" is a ridiculous name for a house. She also insists Clara's baby will be a girl, and when it turns out to be a boy, shedoesn't get involved in David's early childhood.
Later, however, she takes David under her wing and show her true kindness and strength. She welcomes him into her home when he runs away after his mother dies. She becomes a mentor and benefactor to him and helps facilitate his marriage to Agnes. Under her bossy, sharp, and gruff exterior, she is an intelligent, practical, and good-hearted person.
David, on first meeting her, describes her as follows:

My aunt was a tall, hard-featured lady, but by no means ill-looking. There was an inflexibility in her face, in her voice, in her gait and carriage, amply sufficient to account for the effect she had made upon a gentle creature like my mother; but her features were rather handsome than otherwise, though unbending and austere. I particularly noticed that she had a very quick, bright eye.