Rose O'Paradise by Grace Miller White

Thomas Singleton broke down when his wife died giving birth to their daughter. He eventually recovered, but his half-brother Morse kept him locked up at the asylum. After seventeen years, Singleton escapes and tracks down his daughter, Rose, who is due to inherit a fortune on her eighteenth birthday. Convinced that his half-brother will try to trick Rose out of her inheritance, Singleton sends her to live with his former gardener, where she meets wealthy Theodore King. Romance begins to blossom, until Morse tracks the couple down and hires a thug to kill King.