I Quit Being Her Shadow Bride

From the back cover

On the day she tries on her wedding dress, Yvonne hears her fiancé Ethan call her by the wrong name — Clara, her sister and his first love, who died in a car crash years ago. The dress, the extravagant price, the moment he saw Clara in her place: all of it belongs to a dead woman. Ethan, heir to one of the city's most powerful families, has kept Clara's promise necklace against his skin and never truly let her go.

Yvonne is only the illegitimate daughter of the Shaws, sent in Clara's place to hold the two families' alliance together. She has spent seven years walking carefully, imitating a sister she could never replace, staying because she had no choice and because she had quietly loved him for years. Now she understands that the living cannot compete with the dead.

A message to her best friend Zoe, a place at a university abroad, and a heart that has finally stopped trying — Yvonne begins to wonder whether she can walk away from a man who never truly belonged to her.