Lavina was last seen near Goldsmith Avenue, Delahey about 3.20pm on Tuesday.
Police and her family are concerned for her welfare as it is out of character for Lavina not to come home.
Lavina is described as Pacific Islander in appearance with long black hair.
She was last seen wearing a school uniform.
Police have released an image of Lavina in the hope someone recognises her and can provide information regarding her whereabouts.
