[Celestia offers Elsa a wry and amused smile.]

You are not so heavy that I cannot simply fly you up, you know. And you as well, Robin, if we are holding back from any great displays.

[She has no doubt that Robin can simply pass herself up the cliff, hand over hand over hand, but that would be fairly blatant. On the other hand, alicorns are not the picture of subtlety, nor are phoenixes...]