“Harrowhark,” said Gideon the Ninth. “Someday you’ll die and get buried in the ground, and we can work this out then. For now—I can’t say you’ll be fine. I can’t say we did the right thing. I can’t tell you s**t. I’m basically a hallucination produced by your brain chemistry while coping with the massive trauma of splicing in my brain chemistry. Even if I wasn’t, I don’t know jack, Harrow, I never did—except for one thing.”
She lifted Harrow’s arm with the hilt clutched in it. Her fingers, rough and strong and sure, moved Harrow’s other hand into place above the pommel.
“I know the sword,” she said. “And now, so do you.”
Gideon brought them into position: weight on the forward foot, knee bent a little, light on the right. She tilted the blade so that it was held with the blade pointed high before them, a perfect line. She moved Harrow’s head up and corrected her hips.
Time sped up, blurred, moved in bright lights before them. Now the old Lyctor Cytherea—wretchedly old, it seemed impossible that they could have ever taken her for anything else—stood there at the bottom of the stairs. Her radioactive blue eyes were quiet; her sword was held at the ready. She was smiling with colourless lips.
“How do you feel, little sister?” she said.
Harrowhark’s mouth said, “Ready for round three,” and, “or round four, I think I lost track.”

Gideon the Ninth - Act Five, Chapter Thirty-Seven