Sunset wasn't used to the portal. The way her body twisted unnaturally, and the pastel colors that invaded her vision. They were so bright, she couldn't even tell if her eyes were closed or not. She didn't like it that much.
Luckily, it was over in a flash and she landed with a solid thump on her chest. She slowly got to her hooves---something she didn't freak out about because she was once a pony herself---and looked at the surrounding environment. It looked like a huge, crystal building building of sorts. Made sense. Twilight had told her about her new crystal-castle-lifestyle.
Standing in front of her was Twilight herself, a smile of her face. "Hey, Sunset," she said, "welcome to my humble abode."
Sunset Shimmer looked around the gleaming castle. "'Humble abode'?" She asked, keeping her eyes to the ceiling as she slowly walked forward. "More like 'welcome to my huge, majestic, castle.'" As she walked, she accidently bumped into something. She looked down, thinking it was a table, but, instead, saw a slightly annoyed Spike. "Oops, sorry Spike. My bad."
He busied himself by rubbing his arm--the one Sunset had ran into--as he spoke. "It's OK. You were to busy looking at the castle. Pretty neat, isn't it?"
"Yeah, it's breathtaking."
"Would you two please stop talking about this 'home' of mine? I'm not exactly used to the attention, yet." Sunset turned to look at Twilight, who had her wings spread out and a rather annoyed look on her face.
Sunset took a step towards the frenzied alicorn. "Sorry, Twilight. I forgot you didn't want me marveling over it, like you said in that letter you sent me a while ago."
Twilight was already starting to calm down. "It's alright," she said, "I may have over reacted a bit just then. Now, Sunset, what do you need Equestrian magic for?" Sunset began to open her mouth to reply. "I'm guessing you need it to fuel these 'wish makers'," Twilight continued, "but, equestrian magic won't stay in them forever. Only for a hour, then it'll be gone."
"It will?"
"Yeah, that's the side effect of magic in the human world. Remember when we..." Twilight looked to the side and cleared her throat, trying not to say anything that would hurt her friend.
Sunset, however, knew exactly what she was talking about. "Used death-rainbow things to knock me out of my demonic form and ways?"
Spike gestured towards Sunset, all the while looking at Twilight. "Told you." He said.
"Uh...yeah...that..." The princess began to blush. "Then I stayed there for an hour later, to join the dance?" Sunset nodded. "I could still feel the magic energy flowing through the air, it was strongest near the entryway to the school, but I could feel it faintly nonetheless." She started pacing. "When I was saying my farewells and going home, I could feel the magic energy vanishing. It was slow, but, by the time Spike and I set foot into that portal," she pointed a hoof at the portal she made for emphasis. "The magic energy was gone."
"Okay, so, magic only lasts for an hour in my world." Sunset nodded. "I need to find a way to make it last longer."
Twilight stopped pacing to look at her with curious eyes. "How long?"
"Oh..about..." There was a long pause, to Twilight, it seemed like forever when Sunset finally answered. "Forever?"
"Forever?!"
"Or at least a year or two." Sunset added quickly.
"I think a year is a long enough time..." Twilight told her, levitating a familiar-looking book. "I think there may be an extension spell in here somewhere." She set the book on a nearby book stand. "Let's see...Mare in the moon...Elements of Harmony...ah! Here it is! 'Extension Spell--extends the spell given for amount of time thought by the spell caster. Repeating this spell every other week gives best results."
"Every other week?" Sunset asked. "I can't do that! What if I sell one? I won't be able to renew the energy each week!"
Twilight pointed at the book, presumably where the spell was. "Sunset, that's only for the best results."
"I want best results in these!" Sunset cried. "These Wish Makers need the bestest results there can be!"
"Is bestest even a word?" Spike asked.
"Who cares!?" Sunset just then realized she was freaking out. Slowly but steadily, she took deep breaths, forcing herself to calm down. "Sorry." She finally said. "I just really want these to work, and for people to not hate me again."
Twilight, who had her eyes slightly wide and her mouth in a slight 'o', scoffed. "Sunset, come on! I doubt anypony--er--anyone will hate you again. Your a really nice pony--uh--person. If-and I mean 'if'-people do start to hate you, they're just jealous of you, Sunset."
Sunset smiled. "Thanks, Twilight." Twilight nodded, as if saying 'you're welcome'. "Now, how do I get it so I don't have to refresh the extension spell every other week?"
"I guess we could add another spell..." Twilight murmured. "Uh...let's see...do you like the solar spell?"
Sunset cocked her head. "What's that?"
"It says 'The Solar Spell can help recharge/repeated the given spells if placed under the sun for two hours. The object and spells given can then be used for a period of anywhere between 1-3 days before needing a 'recharge' again. The Solar Spell is permanent, but can be given a time limit thought up by the spell caster if needed.'" She looked over to Sunset to see her response.
"Yeah, that can work." Sunset finally said after a minute of careful consideration.
"Great!" Twilight replied, putting her muzzle into her book again. "If you have one of your Wish Makers with you, we can get started right away."
"Oh, I don't have them ready just yet..." Sunset put on a sheepish smile. "I'll write to you when their ready, though. Expect a message tomorrow."
"That sound like a plan." Twilight replied. "How many do you plan to make?"
Sunset was already putting her back hooves into the portal. "Ten, for now." She answered as the rest of her emerged into the portal.
Twilight and Spike waved goodbye as soon as she left, thinking...maybe...she could see them somehow. They stopped after about five seconds.
"I think I'm probably going to pull an all nighter, Spike." She told him.
"Why's that?"
"I need to learn these spells by tomorrow...or else Sunset's plan will never take off."