Okay now the cartographer fourth wheel
SEAWEED COOKIEEEE!!
after a horrible hurricane hit her home, ending in the death of her mother, Ivy Cookie, she was found and sent to live with her "closest to kin", her uncle, Abalone Cookie. Her grandparents were dead, she didnt have any siblings, and he was the first one who picked up the phone. He was AWFUL. Abusive and a liar, he might as well run Eternal Sugar and Shadow Milk out of business. And then there was Lord Oyster Cookie. Not too bad, but wouldn't stand up against the abuse his lover did to both of them. Seaweed Cookie always said she "fell on the rocks" when someone asks about her bruises, and would do anything she could to get Abalone's positive attention, the same attention he had when child services came to check on them for the first few months in weekly intervals. Even letting herself get pushed off a ship and into the sea. Not any sea, though...
THE DUSKGLOOM SEA.
She was found by Sea Rum Cookie, and essentially taken under her care with permission from Black Pearl Cookie, it was clear she only said yes for Sea Rum Cookie tho, not for compassion of the poor soul in her child's arms. Upon being taken back to the Creme Republic with Sea Rum Cookie, she was taken in and adopted properly by Captain Caviar Cookie, and began staying behind with Captain Caviar when her now older sister went to see Black Pearl Cookie, in all honesty the gem mermaid scared her, and she found comfort in books and maps, studying them till she knew every territory, every river by heart.