Diona was a weyrwoman at High Reaches Weyr late in the Sixth Pass. Her dragon was gold Kilanath.
When Moreta suggested to Leri that ichor could be extracted from one queen dragon and applied to the joints of another, Kilanath told Holth that there was no one there who was capable of doing so. Holth told Leri that Kilanath sounded very worried.
When it was decided that Diona would have to extract ichor from Kilanath, Diona told Moreta that she couldn't do it because she was afraid of hitting a nerve or something. Moreta finally decided that she would extract the ichor from Kilanath.