Starlight's Shooting Star

In this 4th book of the Starlight series, Miranda and her classmates become lost in a cave. Miranda saves Grandpa from being killed by a loco cow, but not before he is injured. Mr. Taylor hires a jockey, expecting Miranda to teach Starlight to accept him. Mom plans to marry Adam, Miranda's worst enemy. Wishing on Shooting Star, Queen's foal, seems to bring amazing answers to Miranda's problems.