Freda
From Tolkien Gateway
Freda is a character created for Peter Jackson's The Lord of the Rings and is not considered canon. She and Éothain were sent by their mother Morwen to alert Théoden that the "Wild Men" are gallivanting through Rohan, burning villages. Éothain and Freda are kept at Edoras until they are reunited with their mother sometime between the Warg attack and the battle of Helm's Deep.