An icicle of moonholds her up above the water. (77-78)
We mean, really. Is that safe? In this world of dreamy imagery and wild abandon, we guess it must be. In this case, the gypsy girl is enjoying some logically impossible exercise, high above our poor speaker. Most important about these lines, then, is the way that they communicate the girl's distance from our speaker. She's simply unreachable and, in this moment of alternate reality, that makes her ice cold.