Who is Kipuna from Heretics of Dune and what is their importance?

Kipuna is a Rakian native serving as an acolyte in the Bene Gesserit Keep on Rakis, Kipuna has the typical round, soft features of her people, but a sharp mind. She works as a spy inside the priestly precincts. Kipuna takes over Sheeana's physical training, earning the jealousy of Cania, who the priests give to Sheeana as a servant. Kipuna sees the seeker fired at Sheeana on the roof of the priestly complex, pushes the girl into the high priest's arms, throws herself in the path and is decapitated by shigawire. The Reverend Mother Darwi Odrade greatly mourns her loss.