For Charitable Contributions, there are a couple of options:
1). If you know the amount of taxes it will save them you could enter a special expense for the charitable contribution but back out the deduction amount.
For example, if donating $10,000 would help her save 15% of that amount, then that would be a $1500 deduction… so enter $8500 as the “net value” of the Special Expense.
Option 2). Enter the full Charitable Contribution as a Special Expense. If it goes on for several years use Duration to repeat in on an annual basis. Then enter a Cash Infusion for the “Tax Deduction” they would get for the Special Expense. Thus the 2 line items together would show client detail about what you are estimating in this area.