page 31 of 52 of Master Letters of Emily Dickinson

It is really unusual how much she worked on these letters, but then it might offer some insight into how she went about the writing process with her numerous revisions in pencil and ink, and how she turned “He” into “I dont”. I wonder why she’d make such a careful alteration, but then later add many changes in pencil below? Did she mean for the letter to be done at one point then thought of something new to add?