The Smoke Thief by Shana Abe sounds much more impressive in summary than in execution.
There is a hidden race of dragon-humans in Victorian England, living as a baron and … area people. The pure-of-blood can shape-change to dragon form.
A young woman rebels and flees to live in London, becoming a jewel thief.
Romance akin to the In Death novels ensues when the young unmarried Baron decides to hunt down this elusive thief.
Somewhat fun, but ultimately does not live up to its promise.
The romance/steamy parts are not appropriate for young teens, by the way.