Answer: $611.57 or $612 rounded to nearest dollar.
Explanation:
She would have to make a constant payment per quarter which makes it an annuity.
The $10,000 is the present value of the annuity.
The quarters remaining are = 5 years * 4 = 20 quarters
Quarterly interest = 8%/4 = 2%
10,000 = Annuity * Present Value of Annuity factor, 20 periods, 2%
10,000 = Annuity * 16.3514
Annuity = 10,000/16.3514
= $611.57