Yep blatant insubordination and disrespect to the Chain of Command. She found out that it doesn't end in Brussels.
Art. 88. of the UCMJ: Contempt toward officials
"Any commissioned officer who uses contemptuous words against the President, the Vice President, Congress, the Secretary of Defense, the Secretary of a military department, the Secretary of Homeland Security, or the Governor or legislature of any State, Commonwealth, or possession in which he is on duty or present shall be punished as a court-martial may direct."