Quest for the keys - Stacia Deutsch

Welcome to Elvendale . . .
When Emily Jones was walking through her grandmother's garden, she
never dreamed she would end up in another world. But after crossing
through a secret portal, Emily finds herself in Elvendale, the
land of the elves . . . with no way to leave! Luckily, she meets
the elves of fire, earth, wind, and water.
Together they set off on a quest to find four legendary keys that
have the power to open the portal to Emily's world. But it will
take imagination and courage for them to succeed as they encounter
riddles, talking animals and powerful magic on their way.
Can they unlock the mystery and get Emily back home?