Vanish is the second book in the Firelight series, and it wastes no time between instalments. You could read Firelight and Vanish back-to-back and have them seamlessly read like one book.
Jacinda is a Draki -- someone who can turn into a dragon. She's part of a pride of them, hidden in the mountains from hunters, who value her specifically because of her rare fire-breathing talent. When her mother drags her and her sister away from the pride, she falls in love with a hunter and exposes her Draki to him to save his life.
Vanish is another short, fast-paced story. Jordan's writing is skilfully paced, but it didn't evoke a realistic character voice. The writing style was intricate though packed with repeated and unnecessary descriptions. The first-person narration from Jacinda -- who admittedly lacks a traditional education -- was unnaturally embellished. She's a dragon, not a poet.
Jacinda's personality didn't feel fleshed out. It was established early on by other characters describing her -- as someone who doesn't submit, a spitfire -- yet a lot of this didn't hold up in her actions. Rather, she was mopey, melodramatic, and when in a bad situation, she sooner ran away than used her esteemed talents.
The secondary characters didn't stand out, either. None felt real or inspired any emotion from me. Their relationships with our main character were often explicitly described to us rather than shown, and so none were really able to intrigue me.
The action and romantic scenes (though I couldn't feel any chemistry) were well-done and exciting. They were fast-paced and it was easy to get lost in the rhythm of these scenes. But while they were fun to read, they would've had a bigger impact if you could become attached to the characters.
Overall, I'd say Vanish is perfect for people who loved Firelight, but this book isn't for people who find the characters themselves important and not just what happens to them.
I give Vanish a 3 out of 5.