I think she was upset and showed that in her response. Even Press Secretaries have feelings. The fact that every thing she said is true also speaks volumes to the situation at hand. Maybe both camps need to take a breather. When the press gives you 90% negative coverage this is bound to happen. Like him or not, there is plenty of good things happening in the past 18 months, but you would never know it based on the daily attacks of the press.
Her feelings were hurt by being asked to admit that the press isn't the enemy of the U.S.? Isn't that what you deplorables call a "snowflake"?
The press didn't magically just start giving them 90% negative coverage. That was rightfully earned by the administration. Even when there is good news to report, it simply can't be reported, because the president trying to boast about it turns it into being a huge lie with little facts involved.