Clue: Storm heading off to stop solitary heroine (5,5)
Answer: LORNA DOONE
Explanation: Storm heading off to stop solitary heroine (5,5)
(t)**ORNADO** ("storm" with its *heading off*) *to stop* **LONE** ("solitary") 
Lorna Doone *was a novel by RD Blackmore, published in 1869.