Chaos Comes to Longbourn — Victoria Kincaid

This humorous Pride and Prejudice variation begins at the Netherfield ball. While attempting to suppress his desire to dance with Elizabeth Bennet, Mr. Darcy flees the ballroom only to stumble upon a half-dressed Lydia Bennet in the library. When they are discovered in this compromising position by a shrieking Mrs. Bennet, mayhem follows -- setting off an improbable series of events. When the dust settles, eight of Jane Austen's characters are engaged to the wrong person.

Although Darcy yearns for Elizabeth and she has developed feelings for the master of Pemberley, they are bound by promises to others. How can Darcy and Elizabeth unravel this tangle of hilariously misbegotten betrothals and reach their happily ever after?

This is a novel of 62,000 words with an HEA.