Welcome!!
I wish I could answer your specific question, but I really don't know
I've done a full reading program with my son, though, and I want to emphasize that the
magic is in the child, not the program. It won't hurt if the child reads books and he hasn't seen the words to those books--she'll pick up on it anyway. And if you do word cards and don't have a book with that card, you've still grown the brain.
I wish I could help more. Welcome--and keep the questions coming!! :-)