ok I was a nerdy highbrow kid, but anyway, loved the following at that age: it depends whether your DD likes retro old fashioned things or not. If not, my list is totally useless!
The Wolves of Willoughby Chase
Anne of Green Gables
Narnia!!!
Little Women (very accessible actually, I read the whole 4 books. The values in them, despite being old fashioned, are very very positive and nice)
Malory Towers, Famous Five, St Claires (Enid Blyton is highly toxic though and I think I'd prefer JW)
Anne Fine (Mrs Doubtfire for example)
Roald Dahl, especially the ones with girls as main characters like BFG or Matilda
Family from One End Street (Eve Garnett(?), brilliant, all her books were great.
Mary Poppins (there are several books, they are quite adult, really absorbing, much better than the film)
Anything by E Nesbit
Anything by Noel Streatfeild, you name it, Ballet Shoes, Gemma, Tennis Shoes, Curtain Up, the Painted Garden. However there is some toxicity there, there are always cruel punishments (reflecting NS's own upbringing)
I loved Judy Blume books, as they were true to life and acknowledged negative stuff but in a nice way
Anything by Astrid Lindgren, like Pippi Longstocking, Brothers Lionheart,
Moomin books (quite philosophical and sophisticated, very beautiful books)
Oh gosh I could go on!