Am I to your fancy?
In Reve's opinion, the Hollow Woods was like a small Azea continent. There was no way humans would be able to claim the land for themselves. In a realistic sense, just exposing hints of invasion could lead to a hollow tide that could leave a lasting effect on any kingdom for years to come.
Hence, when Reve and Lithia knew that the items they were asked to appraise were obtained from the Hollow Woods, they realized the severity of the mission.
Immediately, they went to work, using whatever knowledge and skill they harbored to try to identify the items. Reve was not familiar with Narva's history so he could not help a lot, but Lithia was the opposite.
She quickly identified a marking of the items, which was in fact an armor and a sword, to the symbol used by a forgotten faction that existed in the second era.