@jaykayen –
As I recall from my auditing class, When conducting an integrated audit for an ISSUER the auditor (Brown) can issue a combined report on the audit and on internal control (see excerpt from AS 5 below), but for a NON-ISSUER the internal control is essentially a separate engagement (examination, under the AT standards) and a separate report.
HOWEVER, it's the details of the question that “got you”. Crow is the client company, so Crow's written assertion is “management's report on internal control”, not the auditor's evaluation. Management's assertion on internal control is a document written to the users, like the audit report (it isn't addressed to the auditor), and it accompanies the financial statements along with the audit report.
PCAOB Auditing Standard No. 5
86. The auditor may choose to issue a combined report (i.e., one report containing both an opinion on the financial statements and an opinion on internal control over financial reporting) or separate reports on the company's financial statements and on internal control over financial reporting.