48 hours passed, and Kara eventually woke up. She groaned as she tried to sit up, pain going through her head and pulsing through the rest of her body, "Oh Rao." She winced, putting a hand to her head.

"I was wondering when you'd wake up." A voice across the room spoke. Kara slowly turned her head to where the voice was coming from, "You took quite a blow, as did I."

Kara frowned at Lena before her memories came back to her. Kara was silent for a second.

Lena walked over to her, kneeling in front of her. Kara seemed more than a world away. Maybe it was concussion or something, but Lena noticed that Kara's motor skills were a little, if not, more rusty than what they should be.

"Supergirl?" Lena asked, concern laced her voice. She took a deep breath as Kara took around a minute to reply, "What-what happened?" Supergirl eventually asked with a raspy voice. A heavy sigh came from Lena. She was watching Kara's eyes intently. She was no expert or Doctor but she knew when Supergirl wasn't one hundred percent, and now she knew that there was another version of her out in National City pretending to be who she isn't, it scared her even more.

Kara's eyes darted around, trying to cling onto something. She tried to focus on something, and eventually her blue eyes found Lena's. Kara was terrified, she was never normally this slow. She felt almost human. She tried to think of words, but nothing seemed to spring to mind. She could think, but words were lodged elsewhere.

As Lena looked into Kara's eyes, she found that one of them was heavily bloodshot. None of this was right. Supergirl was vulnerable. She had seen Supergirl fall at the hands of Reign at Christmas, but she came back from it, but this...She wasn't sure.

"Supergirl, I know you're scared. I know." Lena said to her calmly as she felt the hero's heart begin to beat faster beneath her palm, "Listen." She said in a soft voice, keeping her eyes locked with Kara, "There is no way out, we are trapped in here, but soon someone will notice that something is up. Alex will know when something is up and they will find us, okay? If I'm missing, that will ring so many alarm bells...I just hope they find us soon."

Kara was almost choking on words as she struggled to form them, "L-" She stopped, stuttering heavily, "W...W..."

Lena frowned, trying to make out what Kara was trying to say. She then looked around, and saw a pen with a pad across the room, "Do you think you could write for me what you are trying to say?"

Kara felt upset and angry at herself. Why couldn't she form simple words that she knew? Why couldn't she form any words at all?

Lena walked across the room, grabbing the pen and notebook from across the room before bringing it back to Kara, "Here you go." She said, passing her both the pen and paper.

Armed with a pen and paper, Kara opened the pad. She seemed determined, but when it came to actually writing something down, she just couldn't.

Lena watched her carefully, "Supergirl?" She asked softly.

Kara wrote nothing but a dot on the page in blue ink. Tears sprung to her eyes as she couldn't remember how to both write or even speak. She wanted to know what was wrong, but she struggled.

The pen dropped to the floor and Lena saw how white Kara's knuckles went as she closed them into fists.

Lena kneeled in front of her, placing a firm hand on Kara's knuckle. She felt how tense it was, and even though the circumstances were terrifying, Lena needed Kara to stay calm.

"Okay." Lena said in a soft voice to try and calm Kara down, "Supergirl...We were attacked by someone...She looked exactly like my friend Kara, and...You..."

It then dawned on Lena and Kara could see it on her face, she had figured out who she really was.

Kara heard her heartbeat jump, if only she could plead with her, or just say something. But she couldn't.

Lena's hand left Kara's knuckle, disbelief showed on her face, "Wait...You...Kara? Are you her?"

Kara couldn't make out the tone in Lena's voice. The way Lena backed up told her what she thought she needed to know.

"Supergirl, do you just happen to look like my best friend or are you..." Lena swallowed the lump in her throat, "Are you Kara?"

Kara couldn't do anything. She couldn't speak, she couldn't deny anything, not if Lena truly knew.

Lena was now angry, but she wasn't truly sure why. Either way, the person in front of her could be dead in a matter of hours or days.

"Supergirl, are you Kara Danvers?"

The blonde sat there, trying to stop herself from bursting into tears. She then slowly nodded, confirming Lena's suspicions.

Lena felt like she had been hit in the gut. Her best friend was pretending. She was being two people, she was Supergirl and she was there when everything was going on. When her and Supergirl fell out over Lena creating Kryptonite. It was all her. Kara was two-faced about everything.

The Luthor did not know what to do now. She just stood in silence.

Kara stared at her face, it was blank. Nothing. It was like she had closed herself off entirely.

After about five minutes Lena spoke up, her voice echoing off of the walls, "I'm kind of glad that you can't speak at the minute. You can think of words, you can form them in your brain but you can't talk or even write them down which means that you can listen to me."

Kara felt like she could be sick at any minute, she wanted to say sorry, to do something to defend herself but nothing passed her lips or her fingers which could have written something, but couldn't.

"I suspect..." Lena began, "You have a bleed in your brain which is causing the lack of speech and your ability to write words down, which is why I hope someone finds us soon. Your other self has used Kryptonite on the door, and has welded it shut. As you can see, we are in a kind of cave that has no other exits other than we used to enter this room." She then sat on the floor, resting her back on the wall. There was silence before Lena got to the real subject matter.

"You used me. For two years, you made me believe that I had someone that I could love, trust and have family with. You were like a sister to me. Now I learn that you are Supergirl, it changes things. You were upset with me about the Kryptonite, I get it. But I would never have used it to harm you, not ever. You know that now, but you should have known that from the start. Maybe it's because I'm a Luthor, I have no idea." Lena then chuckled with a dark humor, "If you look at it, you and I...Superman and Lex...We are...almost similar in that aspect...I would never harm you. Not ever. You claim to be pure of heart. You're really not."

Kara felt a tear sliding down her cheek, as she found herself unable to look at the scorned woman before her.

"No. No, you don't get to be the one who is hurting here." Lena snapped at her, "You used me! You were mad at me and used Kara as a way to cover up your mistakes. I'm an idiot! Sam is gone, and now I see that I have no one. Not even you. We are nowhere near trust. I don't think I could ever trust you again, not after this. You could have been straight with me at the start, but, you chose not to."

"After we get out of here, I have no idea what I will do. You're thinking that I'd try to hurt you. But I'm not like that! Kara Danvers, I loved you in a way that you can only imagine. I thought you...Maybe loved me that way too..." Lena looked up as she heard the door, and banging on the other side.

"Lena?!" Alex called out.

Lena glared at Kara as she stood up, before turning to the door, "I'm in here! With-With your sister." Lena's voice sounded broken.

Alex paused on the other side of the door. She could tell, Lena figured it out.

Damn.

"And I think she has a brain bleed..." Lena said after a moment silence, "She can't form words or even write them down."

Alex's heart skipped a beat, "There is an evil version of her...She is going around destroying everything. Lena, I know you've figured it out, I know! But if you two fall out, Kara's anger or sadness, it is going to feed her other self."

"At this point...I don't care." Lena retorted.

The door opened seconds later. Alex stared down at Kara.

She saw the hurt in her sisters eyes. Kara's heart was broken, and Alex couldn't exactly stand up for Kara, not when it was Lena.

Lena walked out of the room, and followed the other DEO agents out of her own building.