Thellim is puzzled. She would not have thought that required magic? Still, she should maybe verify that the obvious procedure is safe and successful, while Savil is still here to stop her if she's about to make a mistake.
Thellim attempts to carry out the following operation: pick up one of the candles from a wall sconce, light the wick in the fireplace, blow out the wick, and replace the candle in the sconce. Does Savil stop her at any point?