My Lady Quixote — Phyllis Ann Karr

This merry tale of love, adventure, and deception plays out the tangled romance of pretty young Deirdre Chevington, who is engaged to one man and hopelessly in love with another.

When Deirdre's lovely and clever aunt, Cassandra, decides to take a hand to unite the two lovers (through an abduction by a highwayman she just happens to know), the results are both hilarious and touching.