One of my two favorite series by her are the Valdemar books called The Owlmage trilogy: Owlflight, Owlsight, & Owlknight. These focus on the Hawksbrothers, who I find more interesting than the Valdemarians (?). They do interact with the Valemarians and provide a good balance. My other absolute favorites are the Elemental Masters series: The Fire Rose, Gates of Sleep, Serpent's Shadow, Phoenix And Ashes and Wizard of London. Serpent's Shadow and Phoenix & Ashes are my favorites, but I didn't care too much for The Wizard of London - but then The Ice Queen was never my favorite fairy tale. Oh yeah, just in case you haven't read these, each of the Elemental Masters book is a retelling of a traditional fairy tale:
The Fire Rose = Beauty & the Beast
Gates of Sleep = Sleeping Beauty
Serpent's Shadow = Snow White & the Seven Dwarves
Phoenix And Ashes = Cinderella
The Wizard of London = The Ice Queen
She's got a new Elemental Masters book called Reserved for the Cat coming out on October 30th in hardcover. I can't tell what the fairy tale is from the blurb on Amazon, though. Can anyone tell? Here's the blurb:
In 1910, in an alternate London, a penniless young dancer is visited by a cat who communicates with her mind to mind. Though she is certain she must be going mad, she is desperate enough to follow the cat's advice and impersonates a famous Russian ballerina. The cat, it turns out, is actually an Elemental Earth Spirit, and leads her to minor stardom.
Meanwhile, the real Russian ballerina has fallen victim to an evil troll who takes over her body and kills her patrons, drinking their life essences in order to strengthen his powers. And soon, the troll focuses his dark attentions on the young dancer...
Her Bardic Voices series is also good, although not as sophisticated as her Elemental Masters books.
Lark and the Wren
The Robin & the Kestrel
Eagle and the Nightingales
Four and Twenty Blackbirds