"That's okay, Twilight, I can protect you forever."
Pinkie drew her face closer to Twilight's and began hypnotizing her again. Her coils tightened just a tiny bit more, for extra effect.
"Go deep, Twilight, deep into trance, deeper than you could have ever dreamed. Look into my eyes, let the colors fill color mind, and my words fill your soul...."
Twilights Eyes widened again. She was happy to look at more colors and colors made her happier then she was before. Twilights smile became even wider, till the point that a normal pony probably would think that it hurt smiling so hard. Twilight was going so deep that she was forgetting the most basic things, like eating or how to walk. Twilights mind was almost in the state of an infant.
Pinkie Pie let the hypnosis wrack Twilight's mind before continuing with her commands.
"Twilight, you love my eyes, you love my coils, and you love me. You will love me forever, and want to stay so deep in trance that you never come out. You love being my little toy to squeeze and wrap up. You feel so safe in my coils, so protected. You never want to leave them."
Pinkie touched her forehead with Twilight's to seal the deal.
"Above all else, you will obey me. The pleasure of obedience fills your entire being; any life you had before is now put on hold for Auntie Pinkie."
"With this kiss, your fate is sealed. Hear my words and obey."
Without breaking eye contact, Pinkie gently shoved her tongue into Twilight's mouth.
Twilight took everything in that Pinkie said. She loved everything about Pinkie, Pinkie would always protect her and she would never leave Pinkie again, there was nothing else in the world for her. Her studies with princess Celestia, her friends, her little assistant Spike, That was all erased from her mind. She only has Pinkie on her mind.
The kiss was all it took to break Twilight. All that is left now of the once great magician, is just a shell of bliss and the thought of being protected by Pinkie Pie.
Pinkie broke the kiss, Twilight's transformation now complete. She laughed and booped the mindless mare on the nose, content with her actions. She'd have a lot of fun with the new Twilight, and possibly even more ponies....