Summary: When the building catches on fire, Kara has no choice but to reveal herself to the one person she really didn't want to.

Prompt: "You've got some serious explaining to do."

Note: Part 3 in my Supercat Drabbles series

Burning Secrets

"Kiera, I was looking for you. I shouldn't have to go looking for my assistant. She should be where I am, assisting." Cat scolded, as she motioned for Kara to walk with her.

"Sorry," she said, scrambling to get the papers in order as they were walking. "I uh…had a personal issue that I needed to take care of."

"Mhm," For a small human, Cat sure knew how to be intimidating. "Personal issue. What exactly was so pressing that you've now made me ten minutes late to my meeting?"

"Actually, we're not late and isn't the whole meaning of personal well…personal?" Kara blurted before she could stop herself.

Kara closed her eyes and mentally slapped herself. It had been a long week and Kara wasn't exactly in the best of moods. She had been working overtime to help Lucy run the D.E.O and try to help Alex and J'on. Doing that plus her Supergirl duties and being Kara was proving to be a little more difficult than she wanted to admit.

Instead of her sarcastic remark, she felt Cat's eyes on her. "Are you… okay?"

Kara sighed, wishing that the elevator would swallow her up. There was a lot she could handle but Cat pressing her wasn't one of them. It certainly wasn't helping that the elevator seemed to stop working.

"Why aren't we moving?" Cat noticed that they were still on the top floor.

Kara heard it a second before she felt it. Her mind didn't have time to process, only react. The alarms went off and Kara smelt the fire burning in the building as the elevator lurched. "Cat!"

"I'm okay." She said leaning into Kara's touch. "What's happening?"

"I-" Kara struggled but knew that they were more important. "There's a fire in the building and it's spreading. I'll get us out."

"Kiera, I know you want to be a superhero but-" The words died in her throat as Kara took off her glasses and ripped open her shirt to reveal her supersuit. "Well, I'll be dammed. You've got some serious explaining to do."

"I know and we'll talk but right now I've got to get you to safety." Kara grunted as she pried the elevator doors open.

A few hours later, Cat heard a knocking at her door. "Kara?"

"Hi, can I come in?" At Cat's expression, she continued. "Figured the front door would be better."

"Everyone okay?" Despite what most people thought of her, she really did care about the others in the building.

"As well as they can be." She said, stepping into the room. "Only minor injuries. As for your building…"

"I know, I saw on the news." She took a sip of her drink. "So, Supergirl. I knew it, I couldn't explain it but I knew it. Although how did you do that trick with the two of you in the same room?"

"Let's just say I had help from a friend." She revealed as she followed Cat to the couch.

"Mhm," She squinted her eyes and Kara knew where this conversation was going. "And who exactly might this friend of yours be?"

"This isn't an interview." She snapped. "This is an explanation because we were stuck in an elevator and I didn't have a choice."

"I know, I'm just… curious." Seeing the other woman's expression, she continued. "I swear Kara, I'm not going to reveal you to the world. I meant it when Livewire attacked, there's a lot I don't know about you. All I want to do is get to know you, the real you."

Kara stared at her for a moment. She knew Cat, a lot better than she wanted to admit. She had studied her over the years and tried to figure her out. She never thought that she would need to put what she had leaned about Cat this much to the test. One of the many things Alex taught her was to trust her gut. And maybe it was reckless optimism or maybe she just needed to be able to believe in Cat but something told her that it was going to be okay.

So with a small smile on her face, she held out her hand for the other woman. "Hi I'm Kara Zor-El, from a planet called Krypton."

"Catherine Grant," she said, shaking the Kryptonian's hand. "Nice to meet you."