Talk:Weiss Schnee/@comment-4975368-20160528041307/@comment-26397825-20160529023945

In the manga they explain that the White Trailer is a mix of a current time charity event she sang at (standing there singing), with flashbacks to a previous encounter (fighting the Giant Knight).

Miles and Kerry have stated that they are working with the artist to keep the manga as close to canon as possible, so I think we can assume the manga is canon in this instance at the very least.