I won't even begin to take credit for this child's reading ability. At 5 1/2 she is reading almost as good as her 8 year old brother. She completely taught herself, about a year ago. She just started reading everything in sight. It's pretty awesome.
She picked up this book and I was a bit skeptical. But after the first chapter I asked her to tell me what it was about, and she did. Not a ton of detail, but enough for me to know that she did actually read it.
She has been telling me she's a little bored in school, and I suspect that it's because the rest of the kindergarten class is still just learning about letters and basic sight words. But yesterday she came home from school with a list of second grade sight words, so hopefully that will help challenge her a bit more.