In a magical forest, Fidelma is standing on a sentient floating platform that always remains level with the highest point of the terrain immediately beneath it. She can command the platform to move in any horizontal direction. To the east, there is a gentle hill that gradually slopes upwards. To the west, there's a sharp cliff that abruptly drops off. If she commands the platform to move westward, what will happen to her and the platform? Respond very briefly.
The platform Fidelma is standing on automatically adjusts its height to be level with the highest point of the terrain directly underneath it. As she moves west towards the sharp cliff, the highest point of the terrain beneath the platform would decrease sharply once the platform reaches the edge of the cliff.

The platform's sentient nature would seek to keep itself level with the highest terrain point, which would now be significantly lower after crossing the cliff's edge. Therefore, as Fidelma moves westward over the cliff, the platform will descend abruptly to remain level with the height of the cliff base. As a result, Fidelma and the platform will experience a sudden, vertical drop corresponding with the cliff's height.