Edmund's reaction to discovering Aslan was made of stone isn't explicitly described in the book. However, we can infer his feelings based on his character development and the context of the scene:
* Disappointment: Edmund had initially been skeptical of Aslan's power and possibly hoped for a more "human" or less mythical figure. Finding out Aslan was a statue could have been a confirmation of his doubts.
* Confusion: The sudden disappearance of Aslan and his transformation into stone would have been bewildering and confusing for Edmund, especially after experiencing Aslan's presence and power.
* Fear: Seeing Aslan as a lifeless statue might have heightened Edmund's fears about the danger he was in, especially after facing the White Witch.
* Acceptance: Despite the initial shock, Edmund was ultimately a faithful follower of Aslan. He likely accepted the situation as part of Aslan's plan, even if he didn't fully understand it.
Ultimately, Edmund's reaction would have been a mix of disappointment, confusion, fear, and acceptance. He would have been processing the situation while clinging to the faith he had begun to develop in Aslan.