My son is 5 and he definitely rereads until he gets it right. If he read with the wrong characters voice he reads it again the right way or if he started with a normal tone and realized it was actually a question he starts over. If he sees that it says the person yelled or screamed or cried something, it gets a very loud reread. He also starts any sentence again that didn't make sense (usually do to a reading error) or if he lost the meaning while working on a new word. He seems happy when he reads, not frustrated, so we figure all is good as far as wanting to read it just right goes.
