Spellbound: Book One of The Chronicles of Aronshae by J.K. Barber

When I started with this book, it sounded very boring at start. Long sentences, nothing much happens and I was wondering, do I ever get to the end.
Suddenly it changed when a girl (Kathy) was taken to somewhere parallel world using a teleport crystal or actually to the world behind haunted forest humans afraid to explore. And her sister (Sasha) went to find her, while Kathy was just a quest of friendly creatures who could change themselves to animals and heal wounds.
During their travel, they will obviously get companions from different backgrounds and finding each other is just where the book starts, even it’s in the middle.
Evil Ice Queen from legends comes back to take over human establishments with her army of Zombies (Shadow Warriors) and some ugly small creatures called orks.
That evil Ice Queen has been once a best student of magician, now trying to concur the world.
As King has no time to listen such kind of warning, they have to fight themselves. And they are in the position to loose until miracle happens…