Her body was what distinguished her from the common Black Dragon, a source of her strength, and in the Nightshadow Form, she lacked even a constitution, naturally not triggering any special abilities.
Gaven kindly reminded her, "You now possess a special ability of Phasing Transformation—why don't you see what you look like after reconstructing your body?"
He was also very curious to know what the Lizard Queen would look like once she transformed back into a physical state.
After all, the Lizard Queen's abilities were now his, and they were also tied to his later plans to control the Lizardfolk Army of the Tun Marsh. If their slimming plan was too successful, the Lizardfolk might not recognize the Lizard Queen at all, which would be problematic.
Theoretically speaking, the body should look essentially the same after reconstruction as it did before the transformation, since the Soul Consciousness carries memories.