Have a look and see if it's still possible to buy the Josie SMith books. By Magdalene McNabb, I think.
Dd2 loved those books at that age. Josie is a feisty little girl (and so are the other children she knows) but the values are just lovely. Strong, straightforward, honest. Enjoyable stories that most children will be able to identify with.
I like the How to Train your Dragon books - lots of good morals about it being ok to be different, not being a bully, hard work and lots of effort winning out over brute force & ignorance etc. And they're very good stories
If she's just moving on from Rainbow magic & likes animals, the Animal Ark books are quite similar in that there's hundreds of them with the same characters (so that comfort read thing). But there's definitely a bit more too them, and Mandy & her friend (can't remember his name) are good on being helpful, considerate etc.
DD (and I) loved Rumer Godden around that age. I can't tell you how I looked forward to reading about Miss Happiness and Miss Flower, Little Plum and The Dolls' House. Such a joy - full of emotion, longing, intricate detail - absolutely recommend them as a total delight.