Librarian Note: There is more than one author in the Goodreads database with this name.
This is not the Shark Tank celebrity, but an author of children's books. The books are mostly realistic fiction about older children and teens who come from families that are dysfunctional or at least face interesting challenges.
Also used the pseudonym Paige Dixon and Gail Hamilton.
I probably would have loved this book if I'd read it in junior high, but it was really upsetting to read it now and see a child placed in so much danger when there were so many other options.
Good little story - perfect for Christopher/Matt/Sarah. About a young girl who has to ride her horse - back in late 40s/early 50s - from one side of Montana to the other, to get help for her Grandpa. She gets into some frightening situations and is smart enough to get herself out of them.