God alone is sacred in the fullest sense of the word.
Everything else that is called sacred is sacred to a lesser extent, and then only by close association with God.
Is human life sacred? Not in the fullest sense of the word. One human person might morally kill another human person, in self-defense or in defense of others. Even innocent human life is not sacred in the fullest sense of the word. However, innocent human life is sacred in a certain sense, because we are each and all made in the image of God.
Do women differ from men in terms of the sacredness of human life? Certainly not. Eve was made from the side of Adam, from his flesh and bone, indicating that men and women have the same nature. Adam was made from the dust of the earth, indicating that men and women are created by God — we are not gods who can decide what is good and what is evil based on our own desires. Adam and Eve both fell from grace.
There is a certain tendency in modern Catholic theology to exalt women above men in various ways. But Sacred Tradition and Sacred Scripture and the teachings of the Magisterium contain no basis for such an exaltation. Men and women are equal as concerns their nature, and they have different roles in the Church, the family, and society as concerns the will of God. The only basis for exalting women above men is the false teachings of sinful secular society.