This phrase typically refers to Israel, the term “daughter” implying that God is a loving father to His people. However, Book of the Law of the Lord 35:4a calls the daughter of Zion to arise, and calls upon the “Tower of the Flock,” a term for the Magdalene Priesthood. Section 118d:9, 1183:10, and 118g:28 of Doctrines of the Saints calls apostles Victoria Ramirez and FayEllen Ely, and matriarch Anni Rose daughters of Zion. Section 124:45 calls for three women (or one woman with three titles) to represent the Divine Feminine, one being the Daughter of Zion. This may refer to all of Israel, the women of Israel, a prophetess, or a variety of these.
See 2 Moses 30:13; Book of the Law of the Lord 35:4-6; 2 Kings 19:21; Isaiah 1:8, 44, 52:2, 10:32, 62:11, Jeremiah 4:31; Zechariah 2:10, Zechariah 9:9; 3 Nephi 9:75 RAV, 20:37 OPV; Moroni 10:28 RAV, 10:31 OPV; Writings of Moroni 11:41; Lectures 4:7; Book of the Law of the Lord 35:4-6; Doctrines of the Saints 78:14, 118d:9, 118e:10, 118g:28, 124:45.