Miraculous Daughter of Poseidon

(Will include swearing)

When Marinette Dupain-Cheng loses her crush and her best friend as well as figuring out she's adopted, things become too much. She plans to dive in the Seine and never come out. What she doesn't expect is her ability to breathe underwater. She's taken to Camp Half-Blood, where she finally finds her place. Or maybe not. She's still Ladybug, still has a duty to Paris, still is needed by the people of France.