The human doesn't stay quiet for too long- apparently not content without having had the most obvious of questions answered. He even has to bring out a tin can to try and explain and wonders if the Doctor had picked up a faulty one. He speaks in as many simple terms and single words he can, quite amused by the human's stupidity.
"Good- is it?" The Time Lord asks of her new heart, turning from the tea.
"I haven't dared look yet." The human says, looking fairly nauseous. The pains that come with primitive medicine are something the Time Lord is glad he will never have to face.
"Is good. Is very good." He assures the human, looking at the flashing lights on her chest, "Shiny." It almost looks like a bomb- how quaint. Almost makes the place feel like home. He thinks about how amusing it would be to rig all the cybermen as bombs and the destruction it would cause.
"You can carry it off." The human looks flattered- good to see his charisma is still working, "Not everybody can. For some people it all goes a bit... A bit- you know." He finishes making the tea, making a vague flopping gesture at the human supposed to mean 'they keel over and die'.
"Vending machine." He offers, remembering having watched many a human be crushed by falling vending machines. The human tries to laugh along, sounding more than a little panicked.
He passes a mug of tea over with his sage advice.
The human seems even more disconcerted by this but thanks him anyway.
"How long have I been here?" It asks as he grabs his own mug and hopes that the conversation will help him distract himself from the taste.
"Oh. Weeks- many weeks. Maybe months." He says. Of course he knows exactly how long has passed down to the second but that information is quite useless and he would rather not give the human suspicions when it has information he wants.
The human begins to panic about the passage of time and the Master does his best to stop it, wishing that he would not have to deal with a panicking human.
"They don't look so bad." He says of her friends- he's fairly sure she's female-, waving at the monitor showing the Doctor, his two alien pets and the blue one.
She goes to the screen, pretending he doesn't think the stupid statement is quite as dumb as it is.
"Where are they now? Are they okay?" The human asks, one hand clasped around the pole holding the drip.
"They are fine- look at them." He says, both hands gesturing to the screen as he sits at his desk.
"That is now. That's right now." He explains simply as the human somehow continues being confused, "That is them. Is live." He emphasises before it asks any more stupid questions.
"Yeah but they're- the picture- is frozen." It says as if he is stupid.
"No." He clarifies. The human keeps protesting.
"They are at top of ship. Top of ship very slow. We are at bottom. Bottom much faster." He points out. The Master really doesn't know why the Doctor would think dragging around fools like these would be fun.
"Very fast bottom." He emphasises. The Time Lord rolls the words around in his head and laughs.
The human looks torn between confusion and throwing up at the clarity just weaselling it's way into its mind.
"I don't understand." It says and the Master looks up from where he'd been readying his pen in hopes of information.
He wishes that for once the Doctor would pick a companion on his intellectual level.