You should try out Torin's Passage. It's an old Sierra title, but its Disney-like graphics holds the test of time surprisingly well. It's family-oriented, easy and quite funny (Al Lowe, after all). Girls love it.
Also if you can get hold of
Tale of a Hero, I really suggest it. Don't pay attention to the review, it is a light-hearted and imaginative fantasy adventure with many memorable moments and good humour.
Oh, and Emerald City Confidential is surely an excellent recommendation! Probably the best game to start with.