I mean, I understand that she's angry at Siuan for disobeying her orders, though I don't understand why she's fine with Gareth Bryne doing the same, but her anger against Gawyn is pretty nonsensical. I mean, she never actually told him not to help her, she didn't even acknowledge his existence at all. Plus, since when is Gawyn under her authority? How can he disobey her orders if she isn't in a position to give him orders anyway?