Simple:
* Kaikamahine: This literally translates to "island girl" but is not commonly used.
* Kūpuna wahine: This means "old woman," but can also refer to an older woman who embodies Hawaiian culture and values, which might fit the "island girl" concept.
More specific:
* Kaikamahine o ka moana: This literally means "island girl of the sea," highlighting a connection to the ocean.
* Kūpuna wahine o ka ʻāina: This means "old woman of the land," implying a deep connection to the land and its resources.
* Wahine o ka moku: This literally means "woman of the island," emphasizing a specific island.
Metaphorical:
* Lei wahine: This means "flower garland woman," which can be used metaphorically to describe a beautiful and graceful woman with a strong connection to nature.
* Mālama wahine: This means "caretaker woman," implying a woman who is responsible for protecting and nurturing the land.
Ultimately, the best way to say "island girl" in Hawaiian depends on the context and the specific characteristics you want to emphasize.