Charla Tae-Lynn is a supernatural being
She is described to look similar to Cal Leandros with pale skin, grey eyes, and black hair with a slight wave. She speaks with a southern accent.
Very little is known about her. She exibited a silver blue light shimmer when she appeared in Doubletake. And by author's confirmation Charla is/can transform into a blue dragon  and is Trixa Iktomi 's mom. 
- The blue dragon (form) is described as: "A flying serpent with intensely blue scales, black wings, four taloned feet and legs curled under its body, a slender head with a sunburst of black spines and eyes that rivaled the sun at noon" (Doubletake, p220) Additionally, it breaths fire.