Oooh I have some ideas :D ALSO you don't have to use them I just wanna do some writing
Personality: She's a bit closed off from the other SandWings, but only her very close friends know what she's truly like, which is quite playful but also very strict. She could also be very strict and royal when she wants to be. Mesa is also paranoid that she'll be assassinated.
Story: She was a normal Sandwing dragonet who was obsessed with the story of Dragonets of Destiny and was there to see Blister and Burn die. This made her fearful of being murdered, and she swore she'd never let something like that happen to her. So, she trained for many years so she wouldn't be murdered and fought off many dragons who aimed to kill her. The scars came from many dragons trying to kill her.
