Most auditees have no way of knowing if the outcome of an audit will be beneficial from a business perspective or not. Given a choice, 99.9256% of auditees would say take a hike "no, thank you, we've already talked too much" to an auditor. They HAVE to make time for an auditor. Hopefully, with the understanding that the outcome of an audit will be value added for the organization. Either we like it or not, auditing has a large psychological component. Auditors have the elusive "power", which sometimes get misused.
Based on what I understand the scenario, it was a clear "power play". The auditee was using his organizational clout to (attempt to) intimidate an auditor. We can discuss all the tactful and diplomatic ways of attempting to regain control of the situation. Jennifer is an experienced, mature, knowledgeable & value-added auditor. I am sure she can find ways to diffuse the situation. But since this was the first time she was involved with this group/site, I am sure this individual was simply trying to bully his way out of an audit. Why? Very likely because the process he is responsible for is not as robust as he would like it to be. Maybe, Jennifer was getting close to establishing a significant process gap and he attempted to "close the audit" before that objective evidence came to light.