Please generate a detailed characterisation of Mahina.

Mahina is an 11 year old girl living in the Alola region, Mahina’s mother is Selene, an international police officer, who formed the Alola League and was the first champion of the Alola League. Mahina’s father is Hau, the Island King of Melemele Island and a champion of the Alola League, Mahina grew up following the example of her parents and aspires to be a good Pokémon trainer like her parents.