Ina B Forbus (? - 1994) was born in Scotland, but moved to America as a child, becoming a US citizen when she married Sample Forbus in 1931. She and her husband bought a grist mill in North Carolina, and she used it as the setting for some of her books. One of her books, Tawny’s Trick, is a horse book.
Finding the book:reasonably easy to find.
Links and sources
Terri Wear: Horse Stories - An Annotated Bibliography
Tawny‘s Trick The Viking Press, New York, 1965, 187 pp, illus Ann Grifalconi
Kate doesn’t mean to be careless, but sometimes her impulsive nature gets her in trouble. She is given Tawny, a Morgan mare, but if she doesn’t look after her, Tawny will be sold. Kate seeks solace from life’s difficulties in the woods, where she meets a mysterious gypsy woman who plays a pipe and teaches Tawny to dance. Kate plans to surprise her family with a performance. Then a mistake she makes with Tawny threatens the mare’s life. She recovers, but Kate’s parents announce that Tawny must be sold.