Definitely check out
The Butter Bear! It's happy and wholesome, she'll love it!
Miracle and the Christmas Kitten is, as the name suggest, set on Christmas. But even so, it should still be an enjoyable story all year round.
Imagination is, believe it or not, a children's story from EndMaster. It's the longest one out of the three, but if your daughter's really such a smart 5 year old, then I'm sure she won't find it too complicated.
That's all I can think of right now, but I'm sure there's a few more I missed. Not many, though. Perhaps, if you have the the time and the skill, you could write some children's stories yourself? :)