“Navajo distinguishes between a man’s son or daughter and a woman’s son or daughter by the use of different terms for each. So the gender of Zion had to be determined. The problem was settled when a friend called to our attention a number of verses in the Old Testament where Zion is referred to as “she” or “her”, e.g. Ps. 87:5, 48:12, Is. 4:5, 66:8. The term for a woman’s daughter is biché’é, so the “daughter of Zion” became Záiyon biché’é ‘Zion her-daughter’.”
Source: Faye Edgerton in The Bible Translator 1962, p. 25ff.