(I don't own this picture. All Rights go to the owners.)

Name: Belle
Status: Alive
Age: 16
Crush: Percy
Friends: Eternal Sonata Allies
Enemies: Eternal Sonata Enemies
Family: Allegretto (Older Twin Brother), Beat (Younger Brother Figure)
Appearance: Long silver hair in a braid with a light green ribbon, light brown color eyes and wears a simple white inside slim fit removable big bow tie long sleeve shirt underneath a light blue elegant slim fit detachable halter large bow striped pocket sling classic lolita dress, white tights, light brown heeled boots, a light brown satchel, a light blue hair bow, light blue rose earrings, a sapphire blue crystal bracelet, a gray cloak and a light purple crystal pendant.
Others: Her fighting weapons are twin daggers. Protective of her friends and family. Sometimes argues with Allegretto.

Sounds like Rue from Princess Tutu