It can be safely assumed IMHO that a woman with a crown of stars at her head and the moon at her feet, and clothed with the sun, is a queen.
In OT figure the True Church is at times represented by a woman. (Isa. 54:5,6 Jer. 6:2). When the Church apostatizes it was compared to a corrupt woman. (Jer 3:20 Eze 23:2-4). The same figures appear in the NT 2Cor. 11:2 Eph 5:25-32 Rev. 17:1-3) The sun may be thought of as representing the Glory of God especially as revealed in the gospel. The moon can be thought of as types and shadows of OT times that pre-dated and pointed to the more and fuller Gospel that proclaims Christ, His life and Resurrection.