"I am Missy." Because it was a name her companion never used. The pup questions her of course, just to rub in the fact she is still alive for now.
"Missy?"
"Mobile Intelligent Systems Interface. I am a multi-function, interactive welcome-droid. Helping you to help me to help you." She improvises, emphasising the computerised touch on this bit. Might as well play along for a bit. Her Doctor stares at her, expression somewhere between confusion and horror.
"You're very er… Realistic." The Doctor has finally managed to regain his breath.
"Tongues?" The puppy quips and the slight tint of blush makes the Mistress internally give a point to the pup. After all- anyone that embarrasses the Doctor can't be that bad really.
"Shut up."
Missy inserts herself back into the conversation.
"I am fully programmed with social interaction norms appropriate to a range of visitors. Please indicate if you'd like me to adjust my intimacy setting." She trills the r on range to give a bit more variety to her speech as she watches the Time Lord peel himself off the wall, obviously still feeling the… after-effects.
"Oh, yes, please. Please do that. Do that now right now." He actually seems a bit mad- a shame as he obviously enjoyed it as much as she did. She almost pouts as the pup agrees with him.
"Maybe just a tad, yeah." Fine. No kissing for a little while.
"I need to speak to whoever's in charge here." He continues, still flustered.
"I am in charge." The human seems somewhat amused by her impersonation but the Doctor only gets more frustrated.
"Well, who's in charge of you?" He just won't leave this alone, will he?
"I'm in charge of me." The answer is instantaneous. He stares at her in irritation.
"Well, who repairs you? Who, who maintains you?" She doesn't laugh even though she really wants to.
"I am programmed for self-repair. I am maintained by my heart." Missy could never resist pushing all the buttons she can. She takes his hand in both of hers and places it against her chest.
"Is everything in order?" His eyebrows join his hairline- surely he has noticed by now. Even when they're racing as much as they are now surely the Doctor- her Doctor- can feel her twin heartbeats.
"Who maintains your heart?" As he says it he stares into her eyes and she can see that he knows. She maintains her gaze, reading how much he misses her and how much he mourns her death still. She wants to kiss him but manages to keep her arms by her sides as she remembers that she has 'adjusted her intimacy setting'.
"My heart is maintained by the Doctor." Missy tells the truth.
Neither of them breathe as they stand, his hand still against her chest, her hands wrapped around his wrist.
"Doctor who?" She knows that he wants her to admit it, tell him explicitly what they both know. She chuckles hollowly at the question so many people have asked him, remembering when Florence had asked whom she was a Mistress to. With a smirk she calls out.
"Doctor Chang!" Quickly she begins walking away, letting her employee distract them.
She waits behind a corner, listening to their conversation. The Doctor certainly has mellowed out a little as he's grown into this regeneration- and become a lot more observant. How the hell hasn't he noticed the matrix data-slice floating in the corner of the room?
She turns on the feed to the human's office.
"Come in, come in. Going to need to take a reading off you." Missy lets herself laugh at this, knowing that they can't see her now- as if they haven't been being scanned the whole time they were here. The human reassures the Doctor's pet as the Doctor looks into the tank in the middle of the office.
"How does the body keep its integrity? Why isn't it just a bunch of bones floating about?" He questions the man.
"Each body is encased in a support exoskeleton." She can almost hear the sound of the pennies dropping in the Doctor's mind.