SOLVED. Ghost Story about a girl - Maybe Roald Dahl

[Grim]

This is a short story I read a long time ago, I think it was written by Roald Dahl. But basically the plot was about a girl who was on the beach with her family and she stayed late collecting shells, her family went home, and then she eventually got caught by waves and then awoke on a random beach. She then found a mine or tunnel and started walking through till she eventually got home, when she arrived no one saw her and she realised she was a ghost and actually died in the water.

[Grim]

I have found it, it was written by Michael mopurgo and called the Giants necklace

[Rainbowheart]

Glad you found it!

The Giant's Necklace for the link.