Steel checks something wrapped in paper for tampering, and finding none eats it. She informs the tiny fairy, "Time for me to sleep. I prefer not to be watched while I sleep."
Steel sleeps in a tree outside that court's territory, returns at sunrise, and resumes working without comment unless someone talks to her.
And at about lunchtime, Steel is finished with the hill, which is now a pretty waterfall spouting mistily falling water, with the extra displaced dirt forming a shallow bank to help turn the river where it's supposed to go. She tells the watching-fairy, "I'm done," and goes to find Verve or whoever else looks important.
"Hello, Verve. I'm done with the waterfall to my satisfaction, but I wanted to let you take a look at it and ask for any small adjustments you want while I'm still here. I floored the right areas with rock, so it should stay the way it is for at least a hundred years, but erosion will still change it eventually."
She says hi to Promise, dropping the small-tree-sized boulder somewhere that it does not immediately threaten any plants.
"This is the rock I was talking about. I need to transmute the quartz crystals to feldspar, and then it'll be perfect to make a little ten-foot stone circle with. It'll still take a while, though, even after I have the rock done."
"How long? And, uh, if it has to be ten feet I'm not sure it'll fit in my tree unless it can levitate, which means I'll be sitting out in the open. It's not overwhelmingly likely that someone will come by, but..."
"It'll take a while before it's ready anyway. I have to do the transmutation just right, and carve and place the stones, and then do all the bluestream-shaping into the right patterns which will take longer than the rest of it put together, so you have time to think about it."
"If you're guarding me that's all right, but can you go that long without sleep? There isn't a day cycle here so no times are less likely to have traffic than other times."
"Sorcery can do traps. An alarm is just a sound trap. I'll need to study setting them, but it should be doable. And I can be ready for combat, if necessary, immediately after awakening."
Eventually, "I thought of something potentially problematic. You will be alive and conscious during the process, simply disconnected from all sensation. Humans are normally placed in hospitals and forcibly fed. Will you be in an acceptable state after five days of no food or water?"
"I'll be alive. I will not be especially comfortable, but I'll probably be able to drink water if there's some ready and then eat something."
"You should prepare your supplies beforehand, and I will scrupulously not interact with them so there is no chance of them counting as mine."
Eventually, "It's almost ready, all that's left is to activate it. I need to go take care of some things in the mortal world so that nothing bad will occur from my week's absence."
She is gone for two days. When she comes back, "Are you ready?"
Steel waits near the stone circle. When Promise arrives, "As soon as you enter you will feel a mounting... Pressure, for lack of a better word, on your mind. If it starts burning, leave as soon as possible, that means the infusion is failing. If it works, you will move from mental pressure to sensory deprivation seamlessly. You may wish to lie down as soon as you go in, so you don't fall when it hits you."