Nice series of books of the Avalon, Web of Magic Series. Availabe are the following:

Book 1. Circles in the Stream: Deep in the woods, a secret place beckons...  What if you found it and it changed your life forever.

Book 2. All That Glitters: Emily and Adriane have one thing Kara doesn't, a magic gem.  But when Kara finally finds a stone of her own, a sparkly unicorn horn, it brings more trouble than anyone can handle. Pesky dragonflies start showing up. All these creatures come from another world. And all want something from her..but what?

Book 3. Cry of the Wolf: What comes between a girl and the magical animal she's bonded with?  When the girl is Adriane, fearless and fierce, and the creature is her best friend, the wolf, Stormbringer, no danger is too great.  So when Stormbringer is lured back into the magical world, Adriane secretly follows-right through the portal!

Book 4. The Secret of the Unicorn: Something has happened in the heart of Aldenmor, the Fair Glen has vanished! New animal refugees are arriving in Ravenswood, including a mysterious and wild unicorn.  The creature is frightened, confused--and wounded.  Emily must face her greatest challenge to try and save the unicorn and learn it incedible secret.

Book 5.  Spellsinger: The first benefit concert for the Revenswood Wildlife Preserve is on!  Everyone is depending on the event to ensure the survival of Ravenswood.  It's got to be a success.  Kara's on the case.  She's booked two mega rock acts, a fabulous girl band and hottie Johnny Conrad.  But one of the singers may be hiding a dangerous secret.......