When the dancing recommenced, however, and Darcy approached to claim her hand, Charlotte could not help cautioning her, in a whisper, not to be a simpleton, and allow her fancy for Wickham to make her appear unpleasant in the eyes of a man of ten times his consequence. Elizabeth made no answer, and took her place in the set, amazed at the dignity to which she was arrived in being allowed to stand opposite to Mr. Darcy, and reading in her neighbours' looks their equal amazement in beholding it.

请教老师：she was arrived 怎么理解？ in beholding it - it 指代达西和伊丽莎白正在跳舞这件事吗？