Ask Alina exactly how this familiar stuff works.

"Okay we're here."
"Would you like to **** my mouth first, or should I get some food ready for you, sir?"

You scratch your head. It just seems wrong to turn down an opportunity to facefuck a smoking hot girl like Alina but your cock seems to be done for the day. And as gross as you are, even you have limits. You feel grimy and could use a shower.

"Shower first. You need one too, and I might want to kiss you at some point, and you've been tongue fucking my asshole, so I'm thinking we both could use a few minutes to freshen up. You got a spare toothbrush for me?"

"Yes sir."
"Good. And I notice you keep referring to me fucking you as '****'. Are you just saying that cause I like it, or-"

"No sir. I really, really don't want to fuck you. I don't want you in my home. A part of me is screaming inside and wants nothing more than an opportunity to find a way to escape or kill you somehow so I can get out of this predicament. But don't worry. That part is well suppressed. I am your familiar. Hurting you intentionally or even disobeying you is simply impossible for me. I'm almost certain that if you die for any reason, I will too. And yes, I do recognize that you enjoy **** me more than having 'sex' with me. In fact, given how much you love degrading and **** women, if I could suggest that we use a keyword that'll let me switch between my current 'helpful' state, and one where I'll release the part of me I locked away that hates your guts so you can **** her over and over again."

"You can do that?"

"Of course. Anything you desire that is in my power to do, I will do, and do enthusiastically. I am a part of you now. Wouldn't you like to watch the old Alina make you breakfast in the morning against her will and eat it while she's **** to fellate you as she screams and begs you to stop?"

You ponder the thought for a moment. Is that even a question?

"Fuck yeah!"
"Of course. Just designate two keywords. Something you wouldn't use on a day to day basis."

You think for a moment, and realize you don't know enough fancy words to do that.

"Oh of course, I do apologize, sir. I forgot to take into account your intellectual capacity, or lack thereof. May I suggest... 'Sexy-Terry Alina' for my current mode and 'Fuckbunny Alina' for my old self? Would that be easy enough to remember?"
"That's perfect. How did you know... right. Never mind."

You wonder if you should test this out right now.
"Fuckbunny Alina."

The change is immediate. Alina goes from being calm and mild mannered to her eyes instantly widening like saucers. She trips and falls on her ass and starts to hyperventilate as she trembles before you, but she makes no move to bolt or escape.

"Heeey, how you doing there, my new favorite employee. Nice to have you back."

Her eyes dart from side to side. She looks like a caged animal. She looks back at you and a hoarse whisper escapes her lips.
"... Why can't I scream? Why can't I run away? What did you do to me?"

"Oh... that, yeah. I totally fucked up your mind. You're my **** now. You can't do anything to hurt me, and you have to do pretty much anything I tell you to do from now on for all eternity until the day you die. Isn't this great?"

"What?"

You smirk as you look down at the panicking little slut. This is MUCH better.

"I'll prove it to you, come here, and sit with me for a bit so I can explain what your life is going to be like from now on."

Alina wordlessly follows you into the kitchen. You pull out a chair to sit down, and she sits down in front of you, the realization that she can't disobey you is starting to dawn on her.

"I'm assuming the familiar version of you blocked certain parts of your memory so you would be a better fuckdoll for me. That actually works out really great for me, cause I like **** you a lot more than I like fucking you when you 'want' to fuck me."

"What did you do to me? What is this? Please... let me go. Didn't you get enough already?"

"Short answer? No. Long answer? I'm going to use you for a trial run because I need to break my little sister's mind without the magic shortcuts and I figure if I can do it to someone like you, I should be able to do the same to my little sister."
"You're going to do to your little sister what you did to me? You fucking pervert, you deserve to die."

"Language, young lady. Let me show you exactly where you stand right now. Get on your knees, and fuck your face on my cock until I tell you otherwise for disrespecting your boss like that."

"I'll die first, you sick... what..?"

Alina's eyes open wide in surprise as she finds herself falling to her knees before you, and pulling down the front of your pants to inhale your musk against her will.

"Yeah, remember I mentioned magic shortcuts? This is what I mean. I should call you 'training wheels' from now on. Would you like that, you dumb slut?"
"Fuck you, you fucking fuck, I'll kill you, I swear I'll kill you, mmmgmggpphh!!"

You laugh as her words are cut off as she soon learns that she can't suck and cuss you out at the same time. She's still trying to show you how angry she is but the whole 'strong independent woman' schtick isn't really working for her while she's on her knees blowing you on command.

"MMmgghh!"

"That's right, training wheels. That's about what you're worth to me. I broke your mind and I'm going to **** you until you completely give up on everything that you are, and I'm not even doing it because I WANT you. You're just a practice round before the main event. You're a worthless slut. And for all your bravado, all you're ever going to be good for is being my personal cock sucking cumbucket. Fuck me? No. Fuck you."

"Ggguk... guugyk.."

You enjoy the sound of Alina **** herself on your cock. You're pretty sure you won that argument. That doesn't happen very often so you're pretty stoked about the whole thing. Enough that it made your bruised and worn cock think that it's ready to go another round based on the way it's hardening inside your crying employee's mouth."

"Now, get your cute, fuckable ass upstairs and hop in the shower. I'll be there to join you soon. You smell gross. Get the fuck out of here."

With your permission, Alina wrenches her mouth away from your cock and falls back coughing, and tries to her legs back under her so she can head upstairs, as far away from you as possible. At least for now. There she goes. Is she hiccupping again?