Wren, I don't recall how old your DD is but if she is very young (3yrs old?) I've read that their reading can be ahead of their vision. The chapter books have smaller font and it may be fatiguing for her to read. Do you notice a difference w/ her willingness to read larger fonts? My 2nd son was reading at 2yrs old but I didn't push it, I figured he had plenty of time to learn to read. I did notice a difference w/ smaller fonts.