Placing the Triggers

Twilight’s fingers drummed against Rarity's table as she examined the pristine and **** Sweetie Belle lying there exposed for Twilight to begin rewriting her. Her depraved mind examines all the various opportunities her power over the young girl presented itself with. To remake her into a slutty, loyal sex **** of her beloved friend and Mistress Rarity. But right now she wished her Mistress was here to advise her, alas though Twilight suspected she could predict her best friend turned Mistress' desire for Sweetie Belle's servitude she doubted she would take an active role at this time. She was still hesitant, weighed down by morality.

Knowing this Twilight opted to split her commands into two categories. Those that would triggered be by active commands and those that would be triggered by innocuous phrases and actions. The first would be a nice surprise for Rarity after she accepted that she wasn't bound by the morality of other ponies. Ones that she could use to make her twist Sweetie Belle to her will. The second will be to alter Sweetie Belle's personality, through a series of subtle triggers she'll ease Rarity into the fantasy she secretly desired.

First though Twilight felt she'd make a quick security trigger. "Sweetie Belle whenever you are told to 'stop that' all previous triggers will break and you'll return to your normal state. Though you'll still obey all other triggers." Twilight explained to her. It was important that Sweetie Belle could be returned to normal without causing too much trouble. "Nod if you understand."

Sweetie Belle's head nodded. Emboldening Twilight. "If you ever come to realize that you've been hypnotized then you will neither mind that fact, nor the triggers being used on you or anypony else."

Sweetie Belle kept nodding and Twilight smiled but found herself pausing. Which to start with?

"I think I'll start with the personality triggers. Let's see Sweetie Belle…whenever one of us orders you to ‘adopt mannequin mode’ you will strip naked and become a mannequin. You will wear whatever you are told to wear and adopt any pose you are told to, without speaking a word. Understood?”

“Yes.” Sweetie Belle murmured to Twilight’s delight.

“Good now for the next trigger. If you hear the words ‘**** Belle’ you’ll immediately become the eager **** of your sister Rarity. No order would be too much that you wouldn’t obey or find yourself obeying. You will find yourself secretly hoping that this trigger will be used often as you think it's your true self." Twilight explained, running a hand through her lovely mane.

"Real self." She murmured.

"Yes Sweetie Belle, deep down you are a **** to your sister. Not just any **** but a sex ****. Build an attraction to your sister, and fill your subconscious mind with erotic fantasies, nothing is too lewd. This will be true regardless of whatever personality trigger you're under."

"Rarity..." Sweetie Belle moaned, her fingers moving down toward her pussy.

"Now let's install a third trigger. 'Maid Sweetie'. When you have free time you will find, purchase, or have Rarity make a maid outfit as skimpy as possible. When you hear this trigger you will wear the outfit and adopt the personality of a loyal, obedient, and slutty maid to Rarity. Doing any and every chore for your Mistress around the boutique and fulfilling any sexual request or desire she orders you to perform." Twilight ordered her, voice growing firm and solid, before a thought occurred to her. "You will also use your free time not placed under these triggers to learn how to cook, so you can better serve your Mistress.”

She would need the lessons, Sweetie Belle was a terrible cook. And Twilight smiled seeing the younger sister pleasuring herself growing more intense, causing Twilight to feel the arousal flow through.

“One more personality trigger I think, the final trigger will be ‘Sweetie Bot’ if you hear those words from Rarity you will no longer be a pony. Instead, you will be a sex bot. A robot that will fulfil you’re owner’s Rarity’s every desire and directive.” Twilight explained, now taking a seat on the table. Her cunt was just a few inches from Sweetie Belle’s face.

Now though it was time for the second group of triggers. Those that would be triggered accidentally and ease Rarity in. Triggered by innocuous phrases and actions. First though.

“Sweetie Belle whenever any pony slaps you on the ass you will enter a lust-filled craze. If you are already horny it will be amplified.” Twilight explained her fingers slipping down her snatch. Before she used her magic to form a magical hand and spank her firmly on her ass.

"Ah." Sweetie gasped into the air as her face flushed red in arousal.

"Secondly should you hear your sister take a shower it should trigger you to immediately join her, servicing her and arousing her. Not as sisters but as a dutiful lover." Twilight ordered, two fingers digging their way into her snatch now.

"Third the words 'it's a beautiful day' will compel you to proudly display your breasts to either your sister or the public without taking any step to conceal them. This will continue until you are ordered to stop. If you are told 'it's a beautiful night' then you will do the same with your rear." Twilight added as she began to pump her fingers more vigorously.

"Finally if Rarity says to you 'Hello Sweetie Belle' you will have **** but respond with Hello Mistress. You won't be able to correct yourself." Twilight added and was about to wake Sweetie Belle up. But alas Twilight was horny, aroused, **** and far from satisfied and here was a beautiful, young sexy girl under her complete control.

"Now Sweetie Belle before you wake up your Princess has a task for you. Satisfy your Princess.” Twilight ordered, spreading her legs apart. Leaving a glisteningly wet pussy for the young girl.

She moved slowly, listless and drone-like. There was no passion for her movements as she operated like a mindless drone. But this too fulfilled a certain thrill in Twilight’s heart. She’d controlled this girl, she’d wiped away her personality and left her an empty shell.

“Dig in girl.” Twilight purred as Sweetie Belle’s lips dug into her cunt. Licking into her pussy with a slow passionless skill but with a focus and rhythm that Twilight felt herself falling into. Her hips raised and fell almost at a steady beat.

“Oh yes, that’s a good little girl. Use your fingers now, really dig them-AAH.” Twilight squealed her body shivering with delight. “Keep going. Faster.”

Sweetie Belle sped up, eliciting a sharp gasp from Twilight. Her hands reached around Sweetie Belle's skull and pushed her in deeper, taking charge. Sweetie could offer no resistance and soon she was cumming over Sweetie Belle's face. "Wonderful Sweetie Belle. Now you are about to wake up. When you do you will not notice the cum on your face or any sign that we have just fucked. Instead, you will clean yourself, and continue as if nothing has happened. But the triggers will remain. Do you understand?"

"Yes, Twilight." She moaned, to Twilight's delight. Quickly forcing her skirt back over her exposed snatch Twilight leapt to her feet.

"Awaken Sweetie Belle," Twilight ordered, and Sweetie Belle's sweet little eyes fluttered open.

"Did it work?" She asked, her smile plastered with Twilight's cum. Right Twilight had forgotten about that about Opal and the cat.

"We'll have to see." She lied, crossing her arms over her chest. "It can take a while."

"Alright." Sweetie Belle responded disappointedly. "Well check back later, I'm going to take a shower."

“Good idea Sweetie Belle,” Twilight said, giving her a good slap on the buttocks, sending her into a haze of lust. “I’ll be sure to send Rarity over soon.”

“Oh um okay.” She squealed, blushing furiously.

A/N: Wow there's been a lot of comments regarding triggers for Sweetie Belle. I apologize but there's no way I could include them all. Also, the bold text will just mean to clarify any key text (like trigger words, and hypnotic phrases), not necessarily just the root of honesty-related changes.