how old was nani in lilo and stitch

Nani was 18 years old in the first "Lilo & Stitch" movie. She is the older sister and legal guardian of Lilo, who is about 6 years old in the film. Nani takes on the responsibility of caring for Lilo after their parents died in a car accident. Despite being young herself, Nani faces the challenges of supporting her sister financially and parentally while often handling stress and a busy schedule. This age detail is consistent across multiple sources regarding the character's background in the original film and related media.