It was a Friday night and Alex Danvers made her way down the corridor of her sisters apartment building, coming to a halt when she knocked on her sisters apartment door. She knocked once, than twice and a final time but there was no answer. She knew her sister was avoiding her but this was getting ridiculous. She knew Kara was probably x-raying the door to see who it was, as she always did.

She had rung her sister multiple times throughout the day but she wasn't picking up, this had Alex extremely worried as Kara always answered her phone when she rang. With a sigh she rang Kara's phone again, and could hear her sisters ringtone rendition of the Grey's Anatomy theme tune through the door. Alex was getting really annoyed now.

"Kara I know you're in there, open this door right now! Or I'm going to kick it down" She was getting ready to knock again until the door opened and revealed a cape wearing Kara.

"Oh sorry Alex I was sleeping" The girl replied with a meek smile, the brown haired woman raised her eyebrow in a questioning manor until she saw her sisters appearance and frowned.

"What have a I told you about answering the door in your costume?" The older Danvers started to lecture the younger girl.

"Not too answer the door in my Supergirl outfit even if it's you" Kara replied in a slight mock tone.

"It's not funny Kara anyone could see you" Alex stated disapprovingly "Why haven't you been returning my calls?" They both made there way to Kara's living room sofa, as Kara dragged her feet across the floor and Alex hot on her heels.

"Sorry Alex, so much has been going on and I fell asleep" She replied with a tired smile, her hands running through her blonde locks.

"In your Supergirl costume?" She raised another quizzical eye, slightly concerned how tired Kara was.

"It was a busy day okay?" With a sigh Kara quickly changed back into her civilian clothes as she was contemplating on telling her sister what happened today. Kara literally was having the worst week ever. It had been a long week for her considering she lost her powers for a day and that Cat Grant found out her secret. The latter being the reason why she was avoiding her sister as she knew she had to tell her. She wasn't sure how she was going to approach the subject as she knew Alex was going to kill her.

"Drink?" Kara asked suddenly as she made her way from her bedroom.

"Yes please! I need one after my day at work." Alex sat in the chair with exhaustion as Kara handed her the glass of wine, Kara sat beside her with glass in hand as they both sat in silence as Kara turned on Homeland.

"Soo why have you been avoiding me?" Alex glanced to her left questioning her little sister, as she brought the wine glass to her lips.

"I haven't been avoiding you" she let out a half hearted laugh.

"You normally follow me around like a lost puppy, Kara" Alex replied with a half serious look on her face.

"No I don't" she huffed at her sister with a pout on her lips.

"But seriously Kara what's wrong? Have your powers gone again?" If this was the case Alex was extremely worried, her sister only got her powers back yesterday.

"No my powers are fine, it's not that it's just that I've been extremely tired today okay?"

"You know you can tell me anything Kara, I'll always be your big sister no matter what" Kara felt extremely guilty right now she knew she shouldn't lie to her sister but she couldn't bring herself to tell Alex. They both leaned in for a long hug as Kara relaxed into Alex's embrace. She always felt safest in her older sisters arms. With this she gained the courage to tell Alex about Cat. She pulled away from her sisters arms to face her.

"Alex there is something I need too tell you, promise me you won't freak out?" Kara rambled on with the wine glass in her hand, avoiding eye contact with her sister.

Alex was really worried now her protective sister mode going into hyper drive, she touched her sisters shoulder to calm her down.

"You're rambling Kara and I promise I won't freak out"

Kara slightly stuttered "well the thing is..." The DEO agent was growing impatient by the second.

"Kara tell me" Alex had her stern voice on which always made Kara feel like she was a little kid again, she took in a deep breath.

Kara chewed her bottom lip in anticipation "C-c-c-at grant knows I'm Supergirl" Alex's eyes turned into saucers as she stared back her sister speechless.

"Kara Zor-el Danvers" She shrieked as she used her sisters full name, Kara knew that she was in trouble when she did that. Alex got up and started pacing Kara's apartment as she started to scold Kara.

"What the Hell were you thinking Kara? How can you be so irresponsible? Did you tell her?" Kara sank back into the sofa trying to avoid her sisters accusing glare which she had been getting a lot more commonly lately. Kara forgot how scary Alex was when she was mad, normally her anger wasn't directed at Kara but when it was boy was she scared. Kara straightened her back up, fixing her glasses with her hands looking Alex directly in the eye.

"I thought you weren't going to get mad, I wasn't even going to tell you because I knew you were going to react like this" Kara grimaced at her sisters reaction and mumbled the last bit, eyes diverting to the floor.

"You weren't going to tell me? How could you keep this from me? Your very powerful multimedia boss just found out your Supergirl how do you think I was going to react?" Alex took a long swig of her wine as she filled her glass up again.

"Relax Alex, she said she isn't going to tell anyone" Kara tried to calm her sister down, she knew she shouldn't have told her.

"Relax? How can I relax when I know that she could expose you at any minute, I've protected your secret for 12 years Kara, so no one would find out what you can do, who you are" Kara had never seen Alex this angry at her in entire earth years, only that one time when she tried a cigarette in the 10th grade. Lets just say she wish she'd never smoked that cigarette. Alex gaze burned into Kara, who in turn was giving her the puppy dog eyes.

"She said she wouldn't tell anyone, I trust her Alex she's not the person everyone thinks she is" Kara got up from her position on the sofa and placed both her hands on her sisters shoulder reassuring her.

"Well I think I need a word with Miss Grant" On that queue Alex put her glass down and approached the front door, but was blocked by her slightly taller little sister.

"Alex no! I can handle this, also I don't need my big sister marching into my office either, if things get out of control I'll tell you but for now let me handle it okay?" Kara looked straight into Alex's eye with so much determination that she faltered slightly. Kara knew Alex wasn't going to let go off it easily though.

"Fine but you're not of the hook young lady" Alex gave in, she trusted her sister with all heart but she did not trust Cat Grant one bit. Kara led Alex back to her sofa still trying to calm the agent down.

"Hey at least I don't have to lie every time I go and save the city" Joked Kara as she and Alex sat down, if looks could kill Kara would be dead now "Okay too soon?" she replied with a grumble.

"You need to stop telling people your secret! At this rate everyone will know" Alex exclaimed.

"I promise I won't tell anyone else! If someone else does find out you can kick their arse okay?" Kara compromised grinning at her sister, who raised her right eyebrow and nodded her head in agreement

"Deal, but lets hope that it doesn't have to come to that" Kara internally made mental note to not to let anyone find out about her, otherwise she will have a pissed off Alex on her back. Her thoughts were once again interrupted by her sister "By the way why are you in your Supergirl costume? You never did answer my question" Alex inquired again not satisfied with her earlier answer.

"You don't need to know everything I do you know?" Kara fired back at the DEO agent.

"Yeh, I kinda do" the agent replied bluntly.

"Why?"

"Because you are my little sister and I want to know if you're in danger or not? With all those Fort Rozz aliens on the lose it's better that I know where you are" Alex told her

"It's not like I don't have any help, James and Winn help me out all the time" Kara threw her hands up in the air in annoyance, she loved Alex with all her heart but sometimes she could be too overbearing.

"I know that, but I need to know for your own safety" Alex was not letting this one go, she propped herself up on the sofa, focusing all her attention on Kara.

"Fine. I was following a alien from Fort Rozz" Alex hit her slightly on the arm

"Ow, what was that for?" Kara overreacted, clutching her arm as a immediate reaction, even though it could never hurt her she couldn't help it.

"For going after a alien without our help" Alex stated sternly "You're going to be the death of me you know that?" she said as she laid her head on the back of the sofa

"You love me really" Kara said as she laid her head on her sisters lap with a slight smile playing on her lips , as Alex began to run her fingers through the younger girls long blonde hair.

"I always will, little sister" Alex replied with a whisper as Kara drifted off to sleep.