Apple Bloom rushed up immediately to Scootaloo at the beginning of break before the pegasus could buzz off. It sure looked like she wanted to though for some reason.
"Uh, h-hey Apple Bloom--"
"Did you see that?" Apple Bloom said to her urgently, "Sweetie was drinking her Moon tea!"
"Uh... yeah... Sweetie's in heat again," Scootaloo said, scratching her head self consciously.
"But how?” Apple Bloom whispered tensely, eye to eye with the pegasus.
“W-uh-well uh-” Scootaloo was just stuttering and blushing hard enough to burst, her tail down protectively between her legs. Apple Bloom blushed herself and backed up then, giving Scootaloo some space. That filly sure needed a lot of it.
“Sorry...” Apple Bloom said softly. “But I already put boy stuff in Sweetie.”
“B-boy stuff, yeah...” Scootaloo confirmed not thinking about boy stuff at all whatsoever.
“You don’t think it took?” Apple Bloom suggested. “It seemed to work, but it was only my second time, and I did it funny sitting on top of her while she stood in place. Maybe she didn’t like my weight bearing down on her?”
“Bearing down on her...” Scootaloo offered intelligently, her eyes losing focus as her mind went places.
“You okay, Scootaloo?” Apple Bloom asked raising a critical eyebrow.
Scootaloo shook herself, as if to clear her head, saying, “What, me? No I’m fine! Perfectly fine! Better than fine even! No problems here, heh heh.”
“Well that’s good to know,” said Apple Bloom with a smile, “But Sweetie might be a different picture. Has she been avoiding me this whole time because I didn’t cure her estrus at all?”
“No-- no, you did,” Scootaloo said hesitantly, “You really, really did. It just might have... I dunno... worn off?”
“Dinky was right!” moaned Apple Bloom, covering her face in her hooves, “There’s no way I can satisfy all the fillies if they go back into heat!”
“Well maybe it’s just-- um...” Scootaloo bit her lip, unable to say.
“At least it’s not happening to you Scootaloo,” Apple Bloom said relievedly, “I don’t know what I’d do if both of you had it again. That would be terrible!”
“Terrible! Yeah...” Scootaloo agreed with an uneasy smile. “Good thing we don’t have that to worry about, huh?”
“Still, this makes it even more important,” Apple Bloom said, sitting don and rubbing her chin. “If Sweetie gets estrus then that really will make her mean, and that’d just destroy her. I gotta find a way to reach her, get her head straight, put to rest her concerns about colts, and I guess to put more boy stuff in her.”
“More boy stuff,” Scootaloo said dreamily.
“I should have known when I found I could make more myself, that it wouldn’t last forever,” Apple Bloom sighed, “At least it’s more effective than Moon tea.”
“A lot easier to get too,” Scootaloo grumbled.
“I dunno, my sister gets it pretty easily,” Apple Bloom noted, “I couldn’t get her to stop shoving the stuff at me. You can’t get it yourself?”
“Well, not really,” Scootaloo vacillated, “Fillies aren’t exactly allowed to buy it at the store, not until they get to the big 1-8.”
“Yeah, but your parents just buy it for you until then,” Apple Bloom said.
"Look, can we just keep this about Sweetie?!" Scootaloo snapped at her.
"Okay, okay," Apple Bloom said, raising her hooves. "So we gotta find some way to help her, and I gotta be with her again and- and that'd show her that she's alright around colts!"
"What would?"
"If I'm puttin' my boy stuff in, then it'll be totally obvious to her that colts only make her nice and happy."
"Didn't seem to work last time..."
"That's where you come in, Scoots!"
"Me?"
"Yeah you'll be the uh, Sweetie Belle, and she'll be the Rarity, and I'll be Rarity's stallion, I mean Sweetie Belle's stallion, I mean--"
"I get it,"
"When I put it in her last, we were all alone, but Rarity's fine when she's alone, and only goes south when her sister's trying to be with her. So if you're there, then Sweetie will know she's not like Rarity, because she'll totally love you!"
"I get it!" Scootaloo chirped eagerly, "So, so it's like a test. Sweetie Belle puts herself to the test, and then she knows and doesn't have to cry anymore!"
"...I thought you said she weren't cryin'"
"Uh, well, you know,"
"Never mind. Now you gotta tell Sweetie Belle so she can--"
"Woah, woah! No way she'd ever agree to this! She'd thinks she would become evil if you’re just near her, much less inside her!”
“But she’s gotta!” Apple Bloom fussed furiously, “It’s the only way she’ll ever learn. Besides, she did it before.”
“Do you really want to wait for her heat to get so bad that she can’t stand it anymore?”
“I see your point,” Apple Bloom admitted glumly.
“So here’s what we’re gonna do,” Scootaloo said pulling Apple Bloom into a huddle.
“We’re gonna stage an intervention.”
“Like a play?”
“No no it’s just an expression,” Scootaloo said her nostrils flaring angrily. She looked like she regretted that, pulling away from Apple Bloom abruptly.
“It’s like when Twilight had that drinking problem. You get her in a room with all her friends and tell her she needs to cut it out, and then she can’t leave until she at least talks it out,” Scootaloo explained.
“How do you know about that?”
“Oh, she um, sort of was holding me ransom to get at Rainbow Dash’s secret Cider supply.”
“Cider is a helluva drug.”
“So we stage an intervention,” Scootaloo continued, “Which means tricking Sweetie into thinking you’re not going to be there and then you are. Then she confesses and stuff and it all works out great.”
“I dunno Scoots, that seems kinda mean.”
“And leaving her like this is not?”
“You’re right... Sweetie Belle needs help,” Apple Bloom said. “And so does her sister it sounds like. I can’t do much about Rarity, but if you and me work together, we might just be able to help Sweetie Belle once and for all.”
“I am totally up for that,” Scootaloo cheered.
“Alright, here’s the plan...”
(rasarasarasarasarasarasara)
After conspiring together, Apple Bloom said, just to be sure, “So let me get this straight. Our plan is that I hide in the clubhouse, and then you bring Sweetie Belle to the clubhouse?”
“That’s about it, yeah,” Scootaloo said.
“So where does the quart of plum pudding come in?”
“Right after the giant eggbeaters.”
“Oh yeah.”
“... you know what, let’s skip that part. Just wait for me at the clubhouse during second break and I’ll bring Sweetie over.”