A/N: Thank you for the comments.
Guest - The question of who is behind it will keep Alex busy for awhile. Kara will be meaner than normal in this chapter.
"What's happening?" Ruby asked as she approached Lena.
"Ruby? You are meant to be resting." Lena said turning to face her.
"We both know I am fine. What's happening?"
"We are in lockdown." Lena said.
"I guessed that. Why?"
"Alex told me to."
"Why?" Ruby pressed.
"She didn't say, but she did say we weren't to let Kara in."
"That doesn't sound good." Ruby commented. "What are you telling the kids?"
"At the moment, nothing." Lena said. "I don't have anything to tell them."
"Is this place actually Supergirl proof?" Ruby asked.
"In theory." Lena said. "But it has never been tested, obviously."
"Where's Eliza and mom?"
"Your mom is sleeping and Eliza is with the kids."
"So they don't know either?" Ruby guessed.
"No. The call has only just come in."
"What are the weak points of this safe room?" Ruby asked.
"There shouldn't be any." Lena said.
"But you will always have doubts. So where are worried about being weak points?" Ruby asked.
"There are two places that a Kryptonian may have more luck getting in through. But I would rate it at less than two percent. My bigger concern is Alex. She is good with computers and has spent time here before. She might know how to override it. Which is much easier to do from the inside."
"You mean little Alex?" Ruby asked.
"Yes."
"Show me where the weak points are, I'll make sure they are secure. You work on the cyber security."
-00-
"Okay listen up." Alex said going back into the command room. "We have reason to believe that Supergirl has been exposed to Red-Kryptonite. Those of you who don't know what that is, it removes her inhibitions, lets her unleash her anger. Under the influence of Red K she is a threat. We can make a cure, but to administer it we have two problems. The first we need to know where she is, the second is her suit will stop us using darts." Alex said.
"So gas?" Vasquez said.
"If we can make it." Alex said. "Plus we will need to lure her somewhere we can use it. And do all of that before she can tear the city to pieces." She paused before looking at Vasquez and saying. "Oversee getting the antidote made in gas form." She then turned to Rose. "Rose work on tracking."
"Yes Ma'am." Rose replied as Alex walked off. But as she did so she remembered Kara's and Lena's plan to solar flare and came to a stop.
"Harris." Alex called turning. "Look for any energy surges in the last fifteen minutes."
"Yes ma'am."
"I'm heading to L-Corp, call me if you find anything." Alex said.
-00-
"What's going on?" Eliza asked when she saw Lena and Ruby in deep conversation.
"Where are the kids?" Lena asked.
"Still in Alex's room. Why?"
"Kara has been exposed to Red-K." Lena said. "Alex has no idea where she is, but she is worried she'll come here. So right now we are in lockdown."
"The DEO is working on an antidote." Ruby added. "But it is not finished yet. Like Lena said Alex thinks she'll come here, so Alex is going to wait in the car park and try to talk her down."
"That's not going to work." Eliza said.
"It may slow her down." Lena said. "But at the moment we are concerned that Alex, as in Kara's Alex, may try to override the systems and let Kara in.
"I'll talk to her." Eliza said.
"There's something else." Ruby said.
"What?"
"Just after she was exposed there was a large energy spike." Ruby said.
"So?" Eliza asked as realisation spread across Lena's face.
"When Kara was worried about the Red Lantern ring I suggested she solar flared if she was ever forced to wear it." Lena said.
"We think when she realised what had happened she solar flared." Ruby added. "While that is safer for everyone out there, it may make the cure dangerous."
"What's happening?" The teenage Kara asked as the teenage trio approached the adults.
"Alex, you are meant to be resting." Eliza said, seeing her youngest grand daughter in the posse. "Back to bed."
"I'm fine. Besides Ruby is up." She said pointing at the other half Kryptonian in the room.
"Ruby is an adult and half human, her recovery time is different. Back to bed." Eliza said.
"Where's mom?" The teenage Alex asked refusing to move.
"With your aunt." Eliza answered. "Do you really want us to disturb her and tell her you aren't in bed?"
"No." Alex conceded. "But I want to know what's happening. Everyone is acting strange."
"Bed first, then I'll tell you." Eliza said knowing lying wouldn't help.
"It's bad isn't it?" The teenage Alex asked.
"Bed." Eliza repeated trying to usher the trio into the room with Alex's bed. She then let Alex get settled on the bed before sitting on it and taking Alex's hand as the other two teens stood to one side.
"We think your mother has been exposed to something called Red-Kryptonite. It is -" Eliza started only for Alex to interrupt.
"I know what it is. I talked to mom about it. Where is she?"
"We don't know. Your aunt is looking. But in the mean time it is really important that we stay here. I know it will be hard, but no matter what happens, you can't leave this area and we can't let your mom in." Eliza said before pulling her granddaughter in for a hug.
-00-
As Alex paced the car park she suddenly heard a sound from one side. Looking round she saw her sister, dressed as Supergirl walk towards the door.
"Kara stop. You know we can't let you in there."
"You can't stop me." Kara said turning to face her sister.
"Yes we can. And you have already stopped yourself by solar flaring."
"I did solar flare." Kara said taking a few steps towards her sister. "I heard what you said and I thought it was safer to solar flare. But now, now I know I was wrong. I couldn't think before, I was so concerned about you, Alex, your kids, CatCo, the world, I just couldn't see things clearly. But now I can. This is me, I don't need to fear me. There is so much I couldn't see before, but now I understand."
"Kara, this isn't you." Alex said.
"This is more me than I have been in years." Kara shot back. "I have been so naive. But no more. Ever since I got back I have been lying to myself about having a place here. I don't, well not in the way I want. You don't want a sister, you want a bodyguard. That's all I am to you. Don't deny it, you've admitted as much before."
"That's not true." Alex said. "You will always be my sister."
"Liar! You once said I was either part of the family or not. You've said some mean things to me but that really hurt. But I still clung to the belief you were just angry. But when I was stuck out there, alone, scared, in pain, clinging to the belief that my sister would never give up looking for me, it turns out you did just that. So you showed me exactly whether or not I was part of the family."
"That's not true." Alex said.
"Yes it is. But like the pathetic puppy I am, so desperate for love and validation, I still put you above everything. I stayed away to protect you." Kara shouted. "I went through hell to keep you safe. But when I got back the first thing you did was accuse me of killing Kelly. I was out there on the run with Alex because you did what you always do and acted without thinking. I was hunted for years because you went after someone without thinking through the consequences and yet when I act to help people you come down on me so hard." She paused and took another step towards Alex.
"I came back as Supergirl for you, but you have been holding me at arms' length. You don't tell me things, you don't trust my judgement, you treat me as a child. Are you still afraid I will steal your limelight?" She once again paused and looked at Alex.
"Don't look so upset, I am only speaking the truth and you are the real winner here aren't you? I mean despite everything you have done to me, I kept you safe. I kept your family safe. But you couldn't even reciprocate that could you? You have all these empty claims of wanting to protect me and Alex. Why even bother lying? Your actions prove it is a lie. Alex almost died."
"Kara, I-" Alex started, but as she did so J'onn appeared behind Kara and wrapped his arms round her before he put a mask over her face. For a few seconds Kara flailed around trying to escape, but without powers she was no match for J'onn and was forced to inhale the gas. But as the gas entered her lungs and started to be absorbed into her blood she started to spasm.
"Kara?" Alex called running to J'onn who was still holding her tightly as Kara started to scream in pain.
"Kara? What's wrong?" Alex asked trying to get close, but still Kara, through the pain, tried to fight off J'onn.
"Easy." J'onn said as he kept trying to hold the mask in place, making her breath more of the gas.
"Burns." Kara cried in-between screams until she suddenly went limp.