Hi!
Usually it is not recommended to go backward in HOD, as each guide builds on skills from the one before it. However, if your daughter was not using Preparing as it is written, and considering her age, I would think that the expected workload in CtC would be too much. It is a HUGE jump up. Doing Preparing as written is intended to prepare the student for taking over much more independent work and lengthier reading and writing assignments, not to mention reading material requiring more maturity. In this case, a year of Bigger as written and then a return to Preparing as written might be a good idea before heading into CtC. Otherwise you would find yourself having to do the readings and tweak the assignments forever, and lose the benefits intended by the program. It's so much more than great book choices, it's teaching kids to become lifelong learners.
I have to say I understand wanting to read the books too-I read all my daughter's books from Preparing, but I just did it myself after school time or before bed

Of course, you will still have Storytime to look forward to for reading aloud to your daughter
One trap I fell into with my son when he was younger, was that because he was so advanced in reading and in speaking, I pushed him very hard into things he wasn't ready for in maturity. A child may be advanced, even gifted, but I assure you HOD at the recommended age ranges and done as written will leave you nothing lacking.
My 11 year old is also quite advanced-tested in reading at a 12.9 level, but I know for a fact that considering where she is in EVERY area, she would not get the most out of one of HOD's higher programs because they would overwhelm her as written. She recently finished Preparing as written and she had a great year, and grew in so many ways! I know she will fit right into CtC and will gain the skills necessary to succeed in the upper guides.
You know your child best, but I just wanted to share my experiences as food for thought
