Is it permissible for a woman to attach hair other than human hair, or to redden her face, or to dye her hands and feet with black henna, or to color the tips of her fingers, or to pluck her facial hair, with the permission of her husband or master, while mentioning the scholarly differences of opinion on these matters?

There is no confirmed prohibition against an unmarried woman adorning herself. Nor is there a need to reconcile this with the permissibility of an engaged woman beautifying herself for her fiancé, as there is no contradiction that requires reconciliation. What is stated in this question has no relation to the previous question; rather, it includes the words of scholars on specific issues, and it does not address the fundamental permissibility of beautification for an unmarried woman.