Ashy had been observing the routine of the Servant girl for days now.
She knew where she usually went and what tasks were assigned to her. The Imperial Kitchens made dishes of various kinds that needed many unique ingredients. Among such there were foods that needed to be grilled or smoked which needed different kinds of woods.
Her being asked to bring wood was rather common and she would refuel the smoker which needed special kinds of fragrant woods that provided special flavors to the food.
Of course, the Imperial Kitchen had their own store of these kinds of woods and were kept within its grounds for easy access.
Ashy had seen the Servant girl go there before too and knew where it was. Thus when she skipped past it, she was rather surprised.