|“||The elder Miss Finch preferred to stay a finch most all of the time. Which was just as well, really. She never was much of a conversationalist.||”|
–Miss Peregrine's Home for Peculiar Children, Miss Peregrine
Little is known of her, other than the fact that Miss Peregrine is acquainted with her.
Miss Finch and her aunt are mentioned by Miss Peregrine to Jacob Portman.
She is a middle-aged woman.
Like other ymbrynes, Miss Finch has the ability to manipulate time and transform into a bird, which in her case is a finch.
Auntie Finch is Miss Finch's aunt, who usually stays in her finch form.