Reference: https://www.youtube.com/watch?v=HUnuN5GAz5o

Lyn is a young adult of 15-16 years (18-19 respectively in North America). She is the heir to become the Marquess of Caelin, although for her whole life grew up on the plains of Sacae, as a part of the Lorca tribe.
In her representation in Heroes, she carries an almost energetic tone to her voice, in contrast to the more cool and calm rendition of her in Smash Bros. She's informal, as she grew up far from any castle, despite being of royal blood, and struggles to speak as such.

Within this comic, she's bright, cheerful, and overall, a very vibrant tone, as she greets both Azura and Shigure.

You are free to try your own renditions of her, however if you wish to have someone to try and "copy" then, I am partial to Wendee Lee's version of her, as shown above.