Magic School Bus books were around before the TV show. My D2 loved them when she was on the cusp of reading chapter books. Although she really accelerated rapidly. Went from books with a lot of pictures (Magic School Bus, Frog & Toad) to Lord of the Rings in about a year... I wouldn't worry too much if I were you
Just keep visiting the library, she will find her way. And also keep reading aloud. I still read aloud to D2 even though she is 14 years old (just finished Dune, and we are on to Sense and Sensibility now).
