A/N: Thank you everyone for your incredible response and enthusiasm - you guys are awesome! Just so you know, I put the prompt poll up on my profile, so you can go over there and vote for which chapter you'd like me to write next. Any other prompts you submit will get added to the poll too. :)
Also, I wrote the majority of this chapter in two hours because I really wanted to post it tonight for you, so if you see any errors feel free to let me know and I'll gladly correct them.
This chapter is based of a prompt from a guest: Kara is scared about her medical checkup and Alex staying with her through it
Kara had been missing for fifty two hours, held captive by anti-alien conspiracists when the DEO was able to recover her.
The criminals were quickly detained, leaving the agents to search the dark halls of the basement for Supergirl. She was located within a few minutes, in the corner of a dank room, housing green kryptonite. The floor was coated in thick layers of dust, the air sharp with cold.
Kara was a weak, shaking, shivering mess when the agents approached.
"Alex…" she choked out, squinting into the brightness of the agent's flashlights. "I need Alex," she murmured.
"I'm here," a voice called from the doorway. "I'm right here," Alex said, kneeling beside Kara, putting a hand on each of the girl's trembling shoulders.
Kara peeked her eyes open and gave a heavy sigh of relief when she saw Alex was really there.
"Alex," she whispered again and made a shaky move to stand up. Instead, barely stood a foot until she collapsed back down, Alex's arm grabbed her, holding her up before she hit the ground.
Kara pulled her eyes shut and wheezed out a breath, her heartrate speeding.
"Kara?"
"I'm okay. I'm okay. I just—" she trailed off and Alex rubbed her shoulder.
"I can stand," Kara said, easing herself up slowly and more carefully than the first time. Alex rose with her, offering support and helping keep Kara steady.
"Thanks," Kara murmured, leaning against Alex.
The older sister nodded and tightened her grip, noting the way Kara clung to her. The need seemed more than physical, there was an anxiety, a nervousness that was driving Kara closer. "You okay to walk?"
Kara gave a soft 'yeah' in response, flinching as an agent stepped close by. Alex's eyes flicked toward the movement and she furrowed her brows in concern.
She waved the rest of the agents out of the room, until it was just the two of them and Kara seemed to calm considerably.
"What happened?" Alex asked gently as they made their way through the door and out into the hall.
"Nothing," Kara said. "Just tired after everything that happened. I don't know how they got it, but there was so much green kryptonite and I - I was afraid I was going to die. Just when I thought I was going to die, they- they took away, only to bring it back before I could recover com – completely. There was so much and I couldn't do anything."
Alex hated the strain in Kara's voice, the way each word was followed by a breathy gasp. She wished there was a way to just hug Kara so tightly everything would go away. "Alex, I don't feel good," Kara said, and the quiver in her voice told Alex her sister was about to cry.
She knew it was the fatigue, the painful effects of the green kryptonite, and stress of the situation that were pulling on Kara, all adding up and making the girl feel miserable.
"I know," Alex said, gently stroking Kara's arm as they climbed the stairs, and pressing a quick kiss to her hair. "We're almost out of here. You'll feel better once we're away from all this stuff."
"Okay," Kara responded, soothed by Alex's tone.
They emerged from the building moments later, a fatigued and languid Kara could barely keep her eyes open as she stumbled out the door and doctors began to make their way over.
"The medics are going to check you over before we do anything else."
Kara's head snapped up, moving off of Alex's shoulder. "No," she said, shaking her head, eyes wide. "I'm fine."
"Kara," Alex said softly. "You're not fine. You're limping, you wince anytime something brushes your side, you can barely stay standing, and you were just exposed to kryptonite for a potentially fatal amount of time.
"Don't wanna do it," Kara muttered and turned to bury her head against Alex's shoulder.
"Kara," Alex huffed, pulling away slightly.
Kara just moved closer. "Please, Alex. Please don't make me do it."
The desperation and fear lacing Kara's words made Alex pause and tell the doctor's to hold for a minute. Kara wasn't trying to be difficult. She was scared. Her pulse was racing, her breath warm and quick against Alex's neck, and tears pricking at the corner of her eyes as Kara fought to keep them at bay.
"Please," she whispered again, making Alex hug her close and rub her back in slow, soothing circles.
"Hey, no one's going to hurt you. Not anymore," Alex said. "The doctors are just going to help you feel better and make sure everything's okay."
Kara sobbed in reply and Alex knew there was more behind this, more thoughts and fears bubbling over, stimulated by her kidnapping and the hurt that was left in response.
"I'll be right there with you the whole time," Alex promised and raised a hand to stroke Kara's hair.
"You will?" Kara asked, sniffling and pulling back enough to look up at Alex.
"Of course," Alex said with a smile that gave Kara the strength to wipe her tears.
Alex led them over the emergency medical vehicle the DEO had designed specifically for Supergirl. Within a second, the doctors were buzzing around Kara, moving her onto a stretcher and hooking her up to various machines. Kara recoiled with each movement. It was too much. Loud clangs filled the air and strict voices spoke medical jargon foreign to her ears. Doctors bustled around and a tangle of wires formed a web around her. The horrible, suffocating feeling that she was drowning and helpless fell over her and she was back to the night the criminals had emerged from the darkness, weakening her with Green K before taking her away.
It was like she couldn't see; couldn't breathe.
"Heartrate increasing," Kara heard, but the voice sounded jumbled and distant and she felt herself slipping deeper.
Everything was cold. And then breaking through, was a little bit of warmth, a comforting present wrapping around her hand and squeezing gently; and Alex's voice peeked through the darkness, telling the doctors to slow down; telling Kara everything was all right.
Once everything stopped moving so fast, Kara opened her eyes and saw Alex smiling at her. "You're okay," Alex said. "Still right here."
Kara nodded and managed a small smile, coming back down. It was silent for a few moments before Kara spoke up. "When this is over, can we just sit on my couch and watch movies for, like, a year?"
Alex laughed and ran her hand up and down Kara's arm. "Sure," she said. "It's your pick, sister. But after all the rest I'm going to make sure you get, I don't know if you'll want to sit any longer."
Kara gave an exaggerated groan.
"It's 'cause I love you," Alex said.
Kara wrinkled her nose. "I love you too, even when you make me follow every single instruction from doctors."
Alex smirked, pulling Kara into a quick hug, around all the wires and doctors. "I'm glad you're okay and I'm glad you're coming home, safe and sound," the oldest Danvers sister whispered.
"Me too," Kara said softly. "Thanks for coming and getting me."
"Always," Alex said and Kara felt incredibly and impossibly lucky to have a sister like her.