While she certainly wasn't breaking any specific rules, Irene knew she was breaking etiquette protocol. However, getting blatantly drunk also went against etiquette, so if she looked at it that way, sword practice wasn't the worst she could be doing. Those she passed in the hall in passionate embraces spurred by alcohol were likely breaking more rules than her at that point.
With her justification, she pulled the leather gloves from her pocket and then lifted the lid on a cylinder-shaped wooden bin where she found the wooden swords they had used earlier in the day.
The practice dummies were close by, and she decided that was where she would take her frustration out in a bit. For now, it was merely nice to swing a sword and warm up her muscles.
