In the enchanted forest of Dolmara, there is a magical tree known as the Whispering Willow. It has the unique ability to transmit sound through its leaves across vast distances within the forest. Two elves, Erevan and Thalia, are at opposite ends of the forest, each standing next to a Whispering Willow. Since elves have exceptional hearing, they can communicate through the trees by whispering into the leaves. 

A mischievous sprite, named Nix, who relishes in creating confusion, casts a silent spell around Thalia's tree. This spell allows sound to travel into the tree but prevents any sound from escaping the immediate vicinity of Thalia's Whispering Willow. Erevan, unaware of the sprite's spell, attempts to relay a message to Thalia about an impending storm that they need to prepare for. 

Thalia, on the other hand, is trying to inform Erevan about a rare herb she found that can heal any wound instantly, which she knows Erevan has been searching for a very long time. Given the properties of the Whispering Willow and the sprite's spell's effect, what will each elf know after they attempt to communicate their messages? Provide a short response.
To resolve what each elf knows after attempting to communicate their messages through the Whispering Willow trees, we must analyze the situation by considering the properties of the trees and the effects of the sprite's spell.

Firstly, we consider Erevan's position in the forest and his ability to communicate with Thalia. Erevan is standing by a Whispering Willow and is trying to relay a message about an impending storm. Under normal circumstances, his whisper into the leaves of the Willow would travel through the tree network, making it possible for Thalia to hear the message from the other end of the forest. However, there is no information that the spell Nix cast affected Erevan's tree, so we can infer that the message Erevan whispers into his tree will travel as intended up until it reaches the vicinity of Thalia's tree.

Secondly, we examine the situation surrounding Thalia. Thalia is under the influence of Nix's spell, which allows sound to enter the vicinity but traps it, preventing it from escaping. Since Thalia's tree has been enchanted with this silent spell, any sound that reaches her tree, including Erevan's warning about the storm, would not be audible to her. Therefore, Thalia remains unaware of the message about the storm.

Furthermore, when Thalia attempts to communicate information about the rare healing herb, her whispered words would be trapped around her Whispering Willow and thus cannot reach Erevan. The sound cannot travel through the network of trees because Nix's spell blocks the outgoing sound at Thalia's end. As a result, Erevan would also not receive Thalia's message about the healing herb.

After both elves have attempted to communicate their respective messages, Erevan is unaware of the healing herb that Thalia has found, as her message did not travel through the silent spell. Likewise, Thalia remains uninformed about the impending storm because Nix's spell trapped Erevan's warning within the vicinity of her tree. Consequently, neither elf knows what the other was trying to communicate, rendering their attempts futile under the magical constraints imposed by the sprite's silent spell. Each elf is left with their knowledge of the impending storm and the healing herb respectively, without being able to share it with the other.