These are two great books I highly recommend for Sekhmet.
Sekhmet Books
Kant, Candace and Anne Key. Heart Of The Sun: An Anthology In Exaltation Of Sekhmet. iUniverse, 2011.
Krasskova, Galina, ed. When the Lion Roars: A Devotional to the Egyptian Goddess Sekhmet. Asphodel Press, 2011.
Fiercely Bright One 