Lana Is a CPA and Works as an Internal Auditor

Essay

Lana is a CPA and works as an internal auditor for Dynamite, Inc. As she was performing a revenue timing test, for the internal audit schedule and the external auditors, she noticed that the Western division consistently kept the books open 4 days into the next quarter. Lana immediately reported to the Chief Internal Auditor; together they took the issue to the CFO and Controller. The CFO assured them that the issue would be resolved. It has been 90 days since the meeting. Lana is considering blowing the whistle but cannot decide who to tell and when.
What are the ethical issues of concern for Lana? What would you advise Lana to do, how, to whom and in what order, assuming she could qualify for a reward under Dodd-Frank?