From Zelda Legends Wiki
The younger of the two Ranch girls in Majora's Mask, she asks Link to assist her in defending the ranch from aliens. The aliens are trying to kidnap the cows (and if you fail, Romani as well).
Very cheerful, but frustrated at not being taken seriously, Romani is much the same as her sprite-sake, young Malon. She takes to refering to Link by a nickname, and is generally playful and exuberant.