A short story of a little girl who is a servant and how she won the heart of an unbelieving gardener.
One of Grace's earliest books was "A Little Servant", published in 1890 while she was still unmarried. If you're looking for an original, it's written by "Grace Livingston".
A review is found in "The New York Evangelist" in February 1890:
D. Lothrop and Company annouce a number of mid-winter publications...A new book by Grace Livingston, entitled "A Little Servant", is just the thing to give children a high and noble conception of the duty and privilege of "by love serving one another"
Since "A Little Servant" is a children's book, it can be hard to find. It's been reprinted as part of several paperback collections over the years, but if you've never read it, here it is.