Dragon's Cave - The Dragon Girl, #1

Kept in a cave by a terrifying dragon, the Dragon Girl lives alone, far from the world, with no memory of anything outside the cave. Her magic mirror is her only window onto the world... until a little accidental magic brings her a visitor, and she has company for the first time in her life. On a visit to a neighbouring kingdom, Prince Leopold doesn't expect to fall into a magical passage and find himself visiting a dragon's cave.
The dragon may be frightening, but the Dragon Girl is intriguing.  Can the Dragon Girl escape the cave and find a place in the world?