Lily Quench Series by Natalie Jane Prior

As a family of dragon slayers, the Quenches of Ashby have always been burning successes...until the evil Black Count invades, and the family's fortunes go into a downward spiral.  Then a dragon unexpectedly arrives and Lily, the last of the Quenches, is called upon to fight it.  Soon she finds herself on a desperate, magical quest to save Ashby from destruction-and restore the lost heir to his throne...

In the Black Mountains there’s nothing but snow. But it’s there that the magical blue lily grows, which can help Lily Quench stop the evil Black Count from invading her homeland. With her friend Queen Dragon, Lily embarks on a perilous mission to bring the blue lily back to Ashby. Captured and imprisoned, then befriended by the count’s son, they flee to the eerie heights of Dragon’s Downfall... the place where Lily must confront her greatest fear.

Kidnapped and taken back into the past to a crumbling castle in the middle of a creepy marsh, Lily Quench searches for the long-lost treasure of Mote Ely--and a way back to her own time.Locked in a dungeon, attacked by a dragon, and befriended by her eccentric great-great-great-great-grandmother, Lily finds that enemies can sometimes be friends--and that old friends can unexpectedly turn into enemies.

At the end of the earth is Skellig Lir, a dreamy, enchanted island that is inhabited by mysterious people with strange powers. To get there, Lily Quench and Queen Dragon must brave magic, storms, and seas swarming with deadly sea dragons&150and Ariane, the rebellious keeper of the lonely lighthouse of Skellig Mor..

At Skellig Mor, Lily and Queen Dragon discovered the secret of the Eyes in Time. Now they must confront the creators of these dangerous magical devices. But before they can reach their destination, Lily and Queen Dragon are captured and imprisoned. From her cell, Lily hears the frightened cries of a dragon in distress, and fears the worst has happened to her friend.

Something strange is happening in the Black Mountains: people are disappearing, government equipment is being stolen and destroyed, and the miners are in revolt. Countries occupied for centuries by the Black Empire are declaring their independence, and General Sark is powerless to stop the rebellion. A mysterious Robin Hood?like figure known only as Manuelo is thought to be responsible... moreSomething strange is happening in the Black Mountains: people are disappearing, government equipment is being stolen and destroyed, and the miners are in revolt. Countries occupied for centuries by the Black Empire are declaring their independence, and General Sark is powerless to stop the rebellion. A mysterious Robin Hood?like figure known only as Manuelo is thought to be responsible. Fighting under cover of darkness and always in disguise, Manuelo is never seen by anyone other than his closest associates, so Lily Quench goes underground?literally!?to find out exactly who he is and what he is fighting for. . . . less

In the distant past, during the Great War of the Dragons, Queen Dragon's fiancŽ disappeared through the Eye in Time, never to be heard from again. Now Lily Quench has discovered a clue to his whereabouts, and she must accompany Queen Dragon to find him... moreIn the distant past, during the Great War of the Dragons, Queen Dragon's fiancŽ disappeared through the Eye in Time, never to be heard from again. Now Lily Quench has discovered a clue to his whereabouts, and she must accompany Queen Dragon to find him. They arrive safely in a magical place known as the Valley of Eydelen, land of the dragons, ignorant of the fact that, back home, the unthinkable has happened: Gordon the Black Count has finally returned to reclaim the Black Empire! With Queen Dragon and its Chief Quencher away, the fate of Ashby looks grim. . . . less