This list stops where I stopped collecting. To be quite honest, if I was doing a pure VC Andrews collection, this list would only include the Dollanganger books, My Sweet Audrina, and the first few books of the Casteel family saga.
The books on this list are at the very least based on notes written by Virginia before her death. The ones left off are those that were written "in her style," and therefore I decided to leave them off. Feel free to make a list of them, if you would like. I'm just trying to stay as true to her ideas as I can while still being complete.