[@Emma]

I have an idea. So basically there was a storm, a shipwreck and above a floating piece of wood she found a young handsome black haired sailor. She helps the sailor to shore, makes sure he is alive, [s]gives him thorough cpr[/s] and waits around for him to wake up. When he wakes up he is amazed by her beauty and starts chatting with her, [s]telling her he is a prince[/s], but the siren is too shy to talk back so he assumes she is mute. The sailor checks his pockets to make sure the letter is there and thanks the siren before leaving. But the tornado that remains spinning from the storm comes near the shore and throws at him a black octopus. He dies instantly. The siren cries a little before touching the letter with her hands. She suddenly feels a burn and gets a mark over her hand and an instinct telling her that she should open the letter.

Ps: Also for this to work the siren must have red hair.