Ok, for so those wondering what happened in this (^) scene, basically the Master Class is being held in a place that is pretty much off course and slightly further away from Snowbelle City, where the gang has been trying to go to since I think the beginning of XY and Z.

When Serena says this problem out loud, that Amour scene happens and Ash tells Serena that she should not worry and that it's more important that she gets her chance to participate in the Master Class rather than obtaining his final badge.