Motherhood is a wonderful achievement in a woman's life. A woman is feminine when she's with her man. She's also feminine with her friends, by herself, or playing with the dog. A woman cannot but be feminine. We do not feel lust, or physical desire as profoundly as men do.
Women are always with men, and are incomplete otherwise.
In other words, women are non-lustful, and always straight. Or else they are not women. If we are, then we are called by a number of things that supposedly un-sex us. Often both of these at once. The one thing that these two epithets have in common is that they connote a woman who has sex how she wants it, and may not be at the beck and call of a man.