Deru

Deru is Colm  and Emma 's faithful friend. She is a type of nature spirit called a dryad, and despite this, she is normal size''. ''She is the soul of the world tree Drasilmare, and Twig, her dryad steed, is the heart. She has brown skin and a long black ponytail. If she stood still enough you would mistake her for a lotus flower. She goes everywhere with Emma and Colm when Emma's Valkyrie duties call her back into action.

Twig and Deru used to live in the Drasilmare tree, soaking up its wisdom, but are still playful and fun to be around, and not serious.

In Bella Sara Adventures, she's in Canter Downs.