Apologies, I know this has been done a thousand times before. If I give you likes and dislikes, can you give me some suggestions...
Likes Enid Blyton School stories, dislikes the Adventure/famous five ones.
Likes Darcy Bussell magical ballet shoes, dislikes Harry Potter
Loves Roald Dahl, hates Rainbow Fairies 
Likes Jeremy Strong and Horrid Henry, dislikes Susan Cooper
She likes magical stuff without it becoming too unicorny and stories with a strong narrative to keep the pages turning. I think she's an average/good reader for her age but not especially advanced.
When she gets 'into' something she likes I don't see her until she's read it, and when she likes a series, she'll disappear for weeks. But currently casting round for the Next Really Good Book.
Are the Faraway Tree ones too young for her now?
Thanks for your suggestions.