"Yes. It only counts if you mean them, and you can't mean them at me right now."
He walks out of the house and back towards the ship, still at the end of a long trail of smashed trees.
"I can't die." She follows him. She looks back over her shoulder at the house. "How sure are you that you'll be able to keep him from giving orders though the ship?"
"I'm fairly sure he won't be able to reach us, but I can't be certain since magic is, in fact, a thing. I'll turn off all exterior sound pickups, change the damper harmonics to create white noise, lower the resolution on all the cameras until we can't see him writing anything unless he writes it with trees, in which case I'll have enough warning to blast whatever he's trying to write with phasers. I apparently can't shoot him, but I could light fires between him and us. Can he project his voice through walls? That would be a problem."
Behind them, the house goes up in extremely energetic flames.
"I'm a sorcerer."
His eyes look distant for a moment, and a beam of light and heat arcs from a tube on the side of the ship to the burning house. The burning house stops being a burning house and starts being burning wreckage flying in all directions.
"I'm a little concerned he could tell our names to all and sundry. I might be able to hold him down and force-feed him if I shut off the sound on my environment suit, but tricking him into eating something is probably out of the question, considering the no-longer-a-house."
"Feeding him won't help. It's why you had to feed me before giving me your name - food from a vassal doesn't work. Your mistrustful stunt didn't permanently wreck anything but if the rules that you didn't know were slightly different or you'd tried some other stunt you could have left us both trapped."
They're at the ship now. A big door opens to let them into a big room mostly full of tree trunks.
She cannot help fix the ship, probably, so she just finds someplace to sit.
"Fairies. I could maybe de-age you but I'd have to keep doing it."
"No. I just want a cutting of my tree and then to get as far away from Yellow and Thorn as possible without going somewhere where all the food is dangerous and sorcery doesn't work. Another continent would be good if you don't mind."
"Thorium, a deuterium/tritium mixture, and hyperium. Thorium and deutritium are somewhat interchangeable and power my normal-space engines, hyperium powers the jump drive that lets me hop between worlds. How much explanation do you need as to what these materials are? This world seems to use magic instead of science for most things."
"I'm not familiar with the substances. ...If you have any substances that are similar but cheaper I can try transmuting them into your fuel, though, given the chance to look at samples of both."
"How similar does it need to be? Deutritium fluid is basically water with extra neutrons. But thorium is a heavy metal with somewhat similar physical properties to some other metals, I have no idea if you can work with that. And hyperium is almost impossible to make without specialized facilities, I don't really have anything at all similar to it."
"Metal to metal and water to peculiar water should be close enough."
"If that's convenient for you, I don't see why not. It will take me a few hours and moving me while I'm working on it will slow me down."
They arrive at the workshop. He produces a metal canister and a plastic bottle. "The deutritium is inside the metal thing. The bottle has water. Twist them to open them. I'll be working on the engines, call me if you need anything and I can hear you from anywhere in the ship."
When he's left her be, she gets to studying the properties of the fluids and learning the parameters of this workshop in which she is to cast.