I adopted this character from an artist I know from tumblr, had to look the artist name later.

Gravel is your typical earth dragon who serves a royal family gardener, and nanny. Gravel use to be Tira Bright nanny when she was small, and babysit her if her parents had a last minute notice. When she not doing any babysitting, Gravel does gardening word across the land, but her main job always be a teacher at the school where most of the kids she taken care of. Gravel is someone that always see the best in people, and willing to give them great support. She even help Tira and her friends to join the special royal guard scouting division. There is some mystery of her past she tend to keep to herself, even any mentioned of her family