If you can get a hold of a copy I always recommend A.A. Milne's Once Upon a Time. It is a beautiful, well written book that really has as much to give to an adult reading it for the first time as a small child. It is set in a classical fairy tale setting, with a king (or two), a princess, a prince charming and all that but written with such a lot of humour, and unexpected twists and turns, that even if the underlying story is rather serious (two kings going to war with each other over something very silly) you can't help but laugh and feel good in the end. So, highly recommend that one since even if it is old, it still holds it fascination today.
Another favourite of mine is Roald Dahl. Again, an author you will enjoy as much as an adult as a young child because the stories have such depth. They read wonderfully aloud. A few invented words here and there, true, but not any strange ones. The underpinnings of his stories are usually rather dark (orphaned children, poor children) but usually the stories themselves have a positive note to them since they are about the children finding friendship and happiness in life. Matilde might be a good one to begin with, or Charlie and The Chocolate Factory. (Might have got the titles wrong, since I have them in Swedish).
Some already mentioned Neil Gaiman, and I will second that. I especially love The Graveyard Book. Which also have a bit of a dark underpinning (it is sort of, in a very roundabout way, a murder mystery) but is written with a lot of love and humour too. Though, I will say that if you have a sensitive daughter who is easily scared perhaps Neil Gaiman is better left until she is a bit older, or for daytime reading (if you do any). Because some chapters made me have very vivid dreams afterwards.
The three authors just mentioned have that in common that they have written their books not so much for children, as for their own enjoyment with a mind to the age appropriate. You can really feel it when you read them, in the way the language flows over the pages. In the way the stories twist and turn, making even an adult reader wonder where the story will end up. Also you said you wanted books that does not make your tongue knot itself, trying to pronounce strange sentences. These definitely will keep to that. Even if the vocabulary is rich and varied in them (none of that mind numbing "easy reading" language) I think most ten year olds will not have any problems whatsoever with them. The few new words there might be offers a nice chance to widen the vocabulary.
Anyhow, at the age of 10 I was still too young too really appreciate Anne of Green Gables (that I saw mentioned above). Yes, the first part of the book might work. With school, and meeting Gilbert and Diana and all that. But really, I would wait until she is a teen before introducing that, because I think it is best read in the age where you start to be aware of true romance, which I really wasn't until around 13-14.