Can anyone remember a short story about an author, writing in a cabin, falls foul of some yobs who destroy his work. The author is then helped to recall and rewrite the whole huge manuscript in one night by The People. These are apparenly human but are, in fact, aliens. They try to keep a low profile for fear of people turning on them. I think there were a series of stories about them.
A couple, having recently lost a child at birth are staying in a cabin in an isolated area. The husband is working on a book (some sort of textbook).
They discover a baby during a storm. The baby has the power of levitation. At some point a gang of yobs break into the cabin and destroy the manuscript. The baby turns out to be a member of an alien race ("The People") who arrive to collect the baby. As a token of gratitute, they help to reproduce the manuscript with their "wordscriber", a machine that transcribes thoughts into writing.
There are a series of these stories about The People, collected in a volume called Ingathering
I am not familiar enough with the individual stories to know which one it is, but it sounds like one of Zenna Henderson's stories about The People -- aliens who have lost their planet and are now on Earth and are, like you say, keeping a low profile.
The first of these stories is called Ararat. Goodreads has a blurb that says
I can't find anything about rewriting a manuscript, but there are quite a few stories (as you say, a series) and the other points do match. Is this what you're looking for?