Looking for a Modern-Day Story Where the Heroine and Hero Grew Up Together

The female lead is whisked off by the male lead to get married right after graduation. Later, her mother suddenly tracks her down, intending to marry her off. The female lead’s maternal half-brother warns his brother-in-law about their mother’s scheme. The female lead and male lead grew up together in a village by the sea, with a flower-filled valley that only the villagers can find.