See Troy, Patterns of Queenship, pp. 20–23. How ancient Egyptian women underwent such a process is a more difficult issue, discussed recently by Ann Roth, “Father Earth, Mother Sky: Ancient Egyptian Beliefs About Conception and Fertility”, in Alison Rautman ed., Reading the Body Representations and Remains in the Archaeological Record (Philadelphia: Univ. of Pennsylvania Press, 2000), pp. 198–199.