While the maid made her way back to the castle, Arad's incarnation that was in the Divine Hall of Mira looked in her direction. He never expected this to happen, but someone was actually trailing behind her and plotting something.
All nobles, adventurers, and even criminals around these parts knew well how powerful Arad is, so none of them should dare attack one of his maids in broad daylight. Of course, unless they don't know she is his maid, which was quite possible.
No, while inside the guild, the adventurer had no way of telling she was one of Arad's maids; no one could mistake her on the road because she was riding one of the castle's horses. The saddle literally has the castle's embroilment and flag.
All of the castle horses wore those special saddles to make them easier to tell apart, so the guards at the gate won't stop any messengers or soldiers, and so the knights could tell which of the horses were trained and which were not war-ready.
