A/N: This fic will be a combination of Kara/Alex sister-centric one shots. I will gladly make my best attempt on any prompts you leave me, so feel free to send them in :)

This chapter is based off a prompt from a guest, Alex comforting and taking care of Kara after a really bad nightmare or fight and she is too scared to sleep.

I hope you like it, I'd love to hear your feedback!

There was no light where she was, only reflections of silvery glints from the moon, scattering through the building. There were shadows, and the gnawing sensation that something was wrong. Thunder cracked as the wind shrieked and the structure groaned. A large figure darted behind Kara and she spun around, just as it disappeared back to shadow.

A scream pierced the still night air.

Alex.

Kara rushed to the sound, ignoring the dark masses lurking in each corner. She arrived at a long corridor, trying desperately to use her vision to locate Alex, but it wasn't working. She couldn't see. She couldn't find her in the sea of old metal and rusted hinges.

Another scream slit the silence, jagged and pained. Kara tried to call to Alex. Her voice was gone. She threw open the fifth door, revealing Alex behind a curtain of thick smoke. An alien, massive and horrid, was tearing Alex apart, attacking her, torturing her.

Kara tried to run but her limbs were slow and her mind fuzzy. She beat at the creature, tried to shove it away. She howled and cried silently, the night consuming her sound. The alien slammed her against the ground before disappearing in a fog of dust and darkness.

Kara peeled herself off the floor, fighting an ache shredding through her body, and scrambled to Alex. Crimson blood stained Kara's suit, warm as it seeped through the fabric and saturated her skin. She reached for Alex, her pulse was gone, her were eyes glassy; and finally, Kara was able to scream.

Dark. It was the first thing she noticed as she shot up. There was not an ounce of light expect for a few blinking blurs. A fistful of bedsheets spilled from her hand, her chest was heaving and she thought she might be responsible for the high pitched noise ringing through the darkness.

She struggled against her comforter, trashing until it loosened. A tightness strangled her lungs, strangled the air. She needed to find light, she needed to see.

She couldn't breathe.

Alex, her mind cried out against the confusion.

Her heart pounded a wild symphony in her chest.

Alex.

What happened? Where was she?

Alex.

As Kara fumbled around her fingers collided with her phone. Was she at home? Was Alex okay?

Through tear-blurred vision, Kara dialed Alex's number and with each passing ring, the space between Kara's breathing decreased, her body trembling against the headboard of her bed.

"Kara?" Alex's voice was soft and tired. "What's wrong? Is everything okay?"

"Alex," Kara breathed out in a shaky sigh of relief. It was just a dream – a nightmare. A sob slipped from her lips, unbridling the sliver of composure she'd clung to.

"Kara, talk to me." Alex came through the line, this time her voice was alert and laced with concern. "Are you hurt?"

"No, no. I-I'm fine. I'm – I'm okay," she said, through a lump in her throat, words heavy with tears as she squeezed a pillow against her stomach, hugging it to her body.

In her own apartment, Alex sat up and threw off the sheets, already getting dressed. "Did you have a bad dream?"

Kara hiccupped, trying to slow her breathing, but fragments of the nightmare kept coming back, tormenting her all over again. She nodded as tears slid down her cheeks. Then, remembering Alex couldn't see her, mumbled a broken 'yeah' into the phone.

"Do you want me to come over?" Alex asked, anticipating Kara's answer and knowing it would differ from what she really wanted.

"No, i-it's okay," she said after a moment. "I d-don't want to bother you."

"What if I told you I was already on my way?" Alex said as she pulled on her shoes before slipping out into the hall and locking the door.

Kara took a deep breath and Alex noted how it shook. "Then I'd s-say you're the b-best sister in the galaxy."

Despite everything, Alex felt a small smile tug at her lips. "I'll be there in fifteen minutes tops, but I'll stay on the line, okay?"

"Yeah," Kara said with a sniffle, trying to focus on Alex's voice as the minutes passed and she trembled in the darkness.

When she heard the door crack open, was able to see Alex through the walls, Kara launched herself out of bed and flung her arms around Alex the second she stepped into the apartment.

"Hey, hey," the brunette said, immediately returning the hug, pulling Kara close with one hand while rubbing her shoulder with the other. "It's okay. You're okay."

Kara shook her head against Alex's neck, tears slipping down her face, despite her attempts to stop them.

"What happened?" Alex asked gently, holding Kara tighter.

"You died. In my dream. I-I couldn't save you," she mumbled into the fabric of her big sister's shirt.

Oh. "Well, I'm right here and I'm not going anywhere. I'm okay and you're going to be okay, and everything's all right." Alex refused to mention that, in their line of work, one of them losing the other was possible. Terrifying and petrifying and possible. It haunted Alex every single day, but she trusted herself and she trusted her sister and she trusted the work they did.

More what-ifs and possibilities weren't what Kara needed, so Alex hugged her little sister securely and wiped away her tears, promising that things were okay.

"I can't go back to sleep," Kara said, her voice hoarse as she calmed.

"Hot chocolate always seems to help with that," Alex said with a small smile as she moved toward the kitchen. "Hang tight for a second."

A few minutes later, she met Kara on the couch, nursing two warm mugs. Alex passed one to Kara, watching as a little grin tugged at her features. "You added marshmallows."

"Of course," Alex said with a wink, sitting beside Kara and turning on the TV. Half an hour of light conversation passed before Alex noticed Kara slumping beside her, their cups discarded on the coffee table earlier.

"Come on," Alex whispered, absentmindedly drawing circles on Kara's back with her fingers. "It's time to go back to sleep."

"No," Kara muttered, lifting her head. " 'm not tired."

"Yes you are," Alex said as Kara yawned, closing her eyes again.

"I'm scared to sleep, Alex," she responded when Alex nudged her, avoiding the older girl's gaze. "It was so horrible, my dream. It was awful. I couldn't move, I couldn't think. It was so disorienting. I couldn't do anything and you were just lying there bleeding. Until—until you died," Kara finished, her voice cracking and falling to a whisper.

Alex could sense that Kara was close to slipping back into a frantic state and her exhaustion was only making things worse. "You need to sleep. You're not getting enough sleep as it is on a normal night, it's not good for you. You have to try."

Kara sighed, her features tugging downward in a frown, eyes watery. "Will you stay with me? At least until I fall asleep?" Kara asked, blush coloring her cheeks with embarrassment.

"Of course. I'll stay all night, if you want, in case you wake up again," Alex said, smiling warmly.

Kara nodded. "Thank you," she said softly, feeling like she was more work than she was worth, as they deposited their mugs in the sink and walked to the bedroom.

Alex waved off Kara's thanks with a hug, promising that she'd do anything for Kara. It was never a problem. The mattress dipped slightly as Alex climbed onto the other side of the bed and wrapped a blanket around Kara, before she slipped under the covers. With a quivering breath and lips pressed tightly together, Kara lowered herself onto her pillow and closed her eyes.

"You're safe, I'm safe. It's all good," Alex promised, gently running her fingers over Kara's hair as the blonde's breathing evened out, and she turned toward her sister.

"All good," Kara murmured, the presence of Alex's arm on her shoulder, helping remind her that Alex was safe. She was okay. They were okay; sleep could come.