AN: Okay another chapter! Lots of drama! Enjoy! And thank you all so much for the follows/favorites/reviews!

Playlist:

Neon Jungle-Trouble

The Prodigy-Poison

MS MR-This Isn't Control

St. Vincent-The Antidote

Disclaimer: I own nada!

Chapter 16-Losing Control

In the training room Belle was up. She'd been sparring with Natasha for a good half hour when Natasha stepped back.

"I want you to spar with someone else. Loki," she commanded as she walked towards where the others were sitting.

"Of course," he said, not even arguing as he passed Natasha and walked onto the mat. He was wearing a pair of black workout shorts and a black V-neck work out shirt. Belle couldn't help but notice how lean and muscled he was. This was the first time Loki had been invited to train with them and he looked, well, normal. As normal as Loki could look that is. His hair was slicked back like always and he grinned as he took his stance in front of her.

Belle grinned. "I'll wipe that smirk off your face for you if you like," she teased.

"I would like to see you try," he responded as he began to move to his left on the mat.

Belle moved her feet to match his, always keeping the same distance as they circled each other. Loki looked like a snake that was going to strike its prey any moment. He moved just as fast, lunging gracefully for her and missing.

She dodged his advances easily until they got closer and he got his arm around her, bringing her down hard on her back. He maneuvered so Steve, who was watching rather nervously, disappeared from her line of sight behind him and something in her snapped.

She was reminded of the dream from last night but it felt ten times as real. She felt herself panic. She felt like Loki was pulling her away from Steve and him doing just that in the dream was all she could see.

She moved, getting ahold of one of Loki's arms and bending it back, releasing herself from his grip. She had the advantage now and she moved in on him. Instead of trying to get him down on the floor and wait for Natasha to call it she felt the sharp pain in her knuckles as her fists connected with his face over and over.

She was losing control and her vision began to blur. She couldn't stop, following after Loki as he moved backwards on the mat using his hands. He was trying to stand up while blocking the steady stream of her blows.

Suddenly she was yanked off of him and as her chest rose and fell quickly and her vision started to clear she realized there were tears trailing down her cheeks and chin to tickle her neck. She wrenched herself from Thor's grip and dashed out of the room.

Tony helped Loki up and Natasha went to inspect the cuts on his face. Loki was bleeding profusely from his nose. The rapid succession of Belle's hits had managed to fracture it. He wore the same shocked expression as everyone else.

Bruce looked deeply troubled. The only person he ever feared would lose control out of all of them was himself, never Belle. He ran over every scrap of data about her in his mind. Nothing had come up that would suggest she would lose control like that.

They all looked to the door as it banged open and a blur zoomed through the room.

Belle circled the room several times before managing to smack into Thor. She gripped his broad shoulders for dear life, her hands slipping as she and managed to blurt out "I can't stop!" before she was unable to stay still a second longer.

"What do we do!?" Steve asked, worried as he watched the blur that was his girlfriend zip around the room. "What will happen if she doesn't stop?" He looked to Bruce, his forehead creased.

Bruce shook his head. "She'll exhaust herself, maybe pass out." He paused. "Or it, whatever it is, could kill her."

Steve was even more panicked now.

They all seemed to get the same idea and formed a line shoulder to shoulder like they were about to play a game of Red Rover, superhero style.

Belle smacked into Steve and he gripped her tightly around the middle. He could feel her body literally thrumming and vibrating, almost like he was on his bike. He could feel her slipping from his hands and she slipped past him. Next she slammed into Bruce, who after a few seconds lost his balance and fell, Belle zipping away again.

"What are we supposed to do!?" This time it was Loki, just as frightened for Belle as the others.

"We can't stop her," Tony stated. "We just have to wait till she stops herself, until whatever is happening stops."

"And what it if it doesn't!?" Steve barked, getting in Tony's face. "What if this kills her!?"

"Well then I suggest," Tony started but stopped as Belle halted and after one sway on the spot she collapsed into a ball on the floor.

The others came to her side immediately. "We have to take her to the infirmary," Bruce said. "I need to get blood samples and we need to get her hooked up to a heart monitor and fluids. Now."

Steve already had her in his arms, ignoring the silent tears that started to slip down his cheeks. He wanted to puke. She felt like a doll in his arms, limp and light as a feather, sickly pale and hot.

"She's burning up," he stated.

Natasha placed a hand to her forehead. "This is not good. She has to be at 110 Fahrenheit, at least."

"Let's get to the infirmary," Tony commanded.

Once there Steve gently placed her down on a sterile bed, smoothing her matted and sweat soaked hair out of her face.

A doctor and a nurse immediately came up to them and Bruce told them what to do. Once her heart monitor was on they saw how erratic the beat was on the screen it was hooked up to. Fluids were hooked up next along with other various tubes and wires.

"What do we do about the fever?" Steve asked.

"Let me," Loki said, stepping forward. His tone left no room whatsoever for argument.

Loki stood over Belle, concentrating, his Jotunn form showing itself in just his hand, the skin there turning blue.

"Loki," Thor started, worried.

"It's quite alright brother. I know what I'm doing." The room was silent as he placed his blue, ice cold hand against her forehead.

They all watched as her temperature climbed down.

"Ease up Loki," Bruce said. "You don't want to bring it down too quickly."

Loki removed his hand.

A few minutes later Bruce nodded to Loki and he placed his hand back on her forehead. Belle's temperature slowly drifted back to normal and with it her breathing and heart rate began to even out. Everyone took small sighs of relief.

"What the hell happened?" Clint spoke up, perched at the foot of her bed.

"I'm not sure, but it has to be a side effect of the serum. Something we missed or that waited to show it-self," Bruce explained. He left soon after getting several blood samples and Tony went with him.

An hour later the others were still in the infirmary with Belle when Bruce and Tony came back.

Their faces looked disheartened as they entered.

"What is it?" Nat asked as she rose from her chair that was on one side of Belle's bed.

"It's some kind of delayed mutation," Bruce spoke up. "Which is why we didn't see it before."

"Well why has it appeared now?" Steve asked.

Bruce shook his head. "I have no idea. And I don't know if it will come back or not."

"Come back?" Thor asked.

"After about an hour we tested the last vial and the mutation was gone. Everything looked just like it did before the mutation."

Just as Bruce finished that sentence Belle groaned.

Steve's chair was the closest to Belle on the opposite side of the bed across from where Natasha was and he moved closer to her. "Belle?" he whispered.

Her eyes fluttered and she opened them only to immediately toss her arm over her eyes because of the bright lights.

"What happened?" she groaned.

Before anyone could answer she gasped and dropped her arm, eyes searching until they found Loki. "Oh Loki I'm so sorry! I didn't mean to I swear! Look at your face! I'm sorry!" Fresh tears made their presence known. She'd hurt him, one of her friends. The dried blood on his face made her stomach roll. 'I did that,' she thought with disdain for herself, unable to continue looking at his face.

"It's quite alright Belle," Loki tried to assuage her.

"No it's not. You're my friend and look what I did to you! It could've been any one of you too!"

"It's okay Belle," Steve reassured her. "We're just worried about you. You collapsed and you were burning up. Loki was able to get you back to normal."

"He was?" She looked back at Loki.

He nodded.

"I guess I did wipe that smirk off your face after all," she spoke before closing her eyes. Unable to keep them open she drifted off to sleep.

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