How we cite our quotes:
[I]t contained her pride in herself and that it should be she whom he had chosen as his mirror, that it should be her body which was now giving him the sum of his existence, as his body was giving her the sum of hers. (220.127.116.11)
The use of the word "mirror" suggests how sex is viewed in Galt's Objectivist value system. When sex is an expression of love and values, a person's lover becomes a "mirror" for those values.