A/N: Ficlet prompt from theoriginalhorcux: Beckett doesnt like thunderstorms and Castle comforts her.
Set after sometime between 4x02 and 4x09. Another thing, I think it's very out of character when people write stories like this and they're all touchy feely and Beckett pours her feelings out to him so this is far from that but I hope you guys still like it.

She woke up screaming, falling off her bed to hide behind it, sheilding herself from a not existent sniper bullet. Lightning flashed through her apartment causing her to re-feel the bullet burn through her chest except this time he wasn't there, telling her he loved her, giving her a single glimmer of hope to fight through it. To fight with everything she had to live. A roll of thunder filled her ears and this time she saw Montgomery lying on the hanger floor, blood pouring out onto her hands, the floor around her, staining her knees. She spotted her phone on the floor a few feet from her, it must've fallen off the night stand when she scrambled to the floor. She slid over to it and dialed on of the only numbers she had memorized.

Without looking at the caller ID he sleepily answered. "Hello?"

"Castle?"

Upon hearing her voice, she sounded hurt or upset, he sat up. "Kate? Everything okay?"

Another round of thunder and lightning rang/flashed through noth of their apartments. She tried not to react but she dropped her phone and pulled her knees up to her chest, moving backward so her back was flush against the wall. She grabbed her phone again and put it back up to her ear. "-is okay. I'm on my way." He hung up. She moved to her closet where there were no windows and the door could be closed so she could at least muffle the storm.

He was there in record time but when he knocked on her door, there was no answer. He used to key she kept on top of her doorframe to let himself in. He gently called her name, not wanting to startle her. All the lights were off except when he went in her bedroom, he saw a light coming out from underneath the door to her closet. He softly knocked. "Kate?"

She opened the door a little, making sure it was really him. He smiled at her, that smile she loved so much, the one that made the whole world better. He came in and sat next to her. "Bad night?"

She nodded looking down at her lap. "Just a nightmare." She looked up at him. "The storm intensified it a bit."

"A bit?" He said it, not to berate her or make her feel bad about her PTSD but to lighten the mood.

She smiled at him. "Sorry for making you come all the way over here at," she looked at her phone, "3 in the morning. I am so sorry, I didn't notice it was that late…or early."

"Hey," he put a hand on her knee, "you don't have to-" another roll of thunder rang through the apartment. Kate just froze, her eyes widened, she really didn't want him to see her how she was before he got there. She focused on her breathing like Dr. Burke taught her. She hardly noticed Castle whispering soothing nothings. She looked down at her hands that were shaking and folded them together. Castle silently wondered how she could react this badly if she didn't remember anything. "When I got here, the storm was starting to lighten up." He took his phone out of his pocket to look at the radar.

"You don't have to stay. I'll be fine."

"And I'm fine right here. The storm's gonna pass within an hour." Kate glared at him. "I'm not leaving. You don't have to talk to me or even acknowledge that I'm here but I'm staying."

"You just don't know when to back off do you?" He genuinely thought she was mad at him and she saw it. She let out a small smile. "Thank you."