Since she' s asked for workbook-style things, I would go with that.
David Bach has two:
Finish Rich Workbook
Automatic Millionaire Workbook
I'd also suggest YNAB software -- it comes with free online classes on both how to use the software and the budget philosophy, and an online community that she might find helpful. The user manual also incorporates the budgeting philosophy.
Personal Budget Software - Free Home Budgeting Course for the Family