I know, canonally, that J'onn exposes himself in this particular episode but I like to believe that a part of Kara would recognize Alex and give her pause. So, no exposing himself. Alex is a goddess (figuratively) and saves the day, as always.
-X-
Kara glared at the empty street, her vision flaring as lone cars crept along the asphalt. Blinking away the rage, she flew toward her apartment with one intent in mind. She knew Alex was there - she could pinpoint the rhythmic pounding of her heart anywhere.
'Stupid James. He turned me down! He could have had anything with me, but instead he tries to shove me off. He's still in love with Lucy I bet,' she bitterly mused, fists clenched tight at her sides.
'But Alex… Sweet, beautiful Alex - she is so wonderful. Only cares about me. She dedicated her life to me! I wonder if she would want the world. She could have everything her heart desired with me. I always thought she was jealous of me, but maybe she was only jealous she wasn't 'with' me. Maybe there was more to it than I thought,' Kara wondered thoughtfully.
Smirking, she changed her plan of action.
Using her x-ray abilities, she spotted Alex stalking through her apartment with her sidearm drawn and a serious expression adorning her features. Slipping through her bedroom window, she made her way silently to the door and waited for the brunette to take notice.
"Hello, sister." She smirked at the DEO agent, hand firmly placed on her hip. "Look, I picked out my own outfit without any fashion advice from you."
Wary eyes traveled along Kara's lithe form. Absently, she noted how 'good' the Kryptonian looked in her new outfit. 'Stop it, Alex, she's your sister.'
'Except she's not,' the voice in the back of her mind reminded gleefully.
"All these years you've pushed those dowdy sweaters and skirts on me," Kara muttered irritably.
She swiveled her head towards Alex and gave a predatory smile. "I thought it was to cloak my beauty so I didn't outshine yours." Twisting her gaze to her racked clothes, she was quick to set them on fire.
"Kara!" Alex exclaimed in alarm, rushing for the nearest fire extinguisher. She hastily began hosing down the flames, smoke bursting from the canister.
Giggling maniacally, Kara stalked deeper into the apartment.
"Kara, this isn't you." She followed after the Kryptonian, worry - and a hint of fear - marring her paled face.
"I'm more me than I've ever been." She raised her arms proudly, throwing a wink over her shoulder at the brunette.
"Please listen. You've been exposed to Red Kryptonite. It's altered your brain, you're not seeing clearly."
"I see everything clearly." She circled Alex slowly, "I used to think all of this was because you were so jealous of me - of my powers. You didn't want me to become Supergirl. I can fly, I can catch bullets with my bare hands, and I thought it made you feel worthless." She was face to face with Alex in a split second. "But, you didn't want me to become Supergirl because you wanted me all to yourself, didn't you?" She brushed a loose lock of hair from Alex's forehead.
"I-I," Alex sputtered, blushing at the declaration and close proximity, fighting the urge to lean into the touch.
Kara grinned victoriously. "And when you couldn't stop me, you got me to work with you - for you, actually. You wanted to regain some control and some of my attention. Well, you've got it now, darling."
"Kara…" she sighed, eyes closing without her permission.
Stepping away, Kara smirked at the startled look that crossed Alex's face at the sudden movement. She meandered toward her window and threw it open. "Look at this city. They worship me." Red trailed through her veins. "But they could worship you too, Alex." She peered over her shoulder at the agent. "And those who won't, will."
"Kara, just listen to yourself," she muttered softly. Her body ached for Kara's touch.
"Oh, cut the big sister act, Alex. We have never been sisters. We don't share blood," she practically purred and strolled confidently over to her. "And thank God for that."
She lunged forward and caught the brunette in a passionate kiss, her hands cradling Alex's cheek. The pressure was almost painful, but Alex didn't care. She leaned into the embrace, forgetting the reasons behind it.
A powerful tongue trailed along her bottom lip and she was quick to her access. Kara's muscle tangled with her own, taking control of their kiss. Alex was more than willing to give it.
Hands slid from her face to her waist, tugging her hips close, eliciting a gentle moan that rang audibly in Kara's ears. She tangled her fingers in Kara's golden locks and gripped roughly, allowing the Kryptonian the luxury of the sensation.
'God, kissing Kara is amazing,' her foggy mind observed, 'It's better than I imagined.'
The realization of what was occurring came over the agent and her eyes flew open. She removed her hands from Kara's hair and took her shoulders, pushing back slightly. "Stop. Kara, stop!"
The blonde pouted as she stepped backwards. "Why?"
"Because this isn't you, Kara. It's the Red Kryptonite."
Grinning, Kara playfully replied. "Pink Kryptonite would be what turned me gay, Alex, but I haven't been exposed to that. Besides, bisexuality is a thing and I've always been attracted to both, so…"
Swallowing that knowledge, Alex stared pleadingly at Kara as she backed towards the window. "Kara…"
Shaking her head, Kara glared at Alex. "You're a coward, Alex, but don't worry, when this city is mine you can still be my queen." She blew a kiss to the agent.
In an instant she was gone, leaving the brunette to dissolve into tears. She feared that Kara - her Kara - would never be back.
-X-
When Maxwell's weapon was finished, Alex went on a search for Kara. Though, it wasn't too hard to find the Kryptonian when she blew up a billboard in rage. It was a startling sight. Her usually sweet, kind sister was gone, leaving behind an angry, power hungry creature.
Bullets slammed into Kara, but did nothing but cause her to laugh maniacally. "Is that the best you can do?"
Fear - for the city and for her alien - pumped through Alex's veins and she swiftly hopped from the SUV and joined in the fire fight.
"Supergirl, you need to stop!" Alex screamed, barely audible over the gunfire. "This isn't you."
Kara's hate-filled gaze turned to the brunette, though it unknowingly softened. "I told you once, I'm more me than I've ever been."
Swooping down, she ripped the guns from the agents' hands. She winced slightly at the sound of breaking bones and glanced down. Horror swam through her soul - the true Kara, not the Red K nightmare she'd become -, but she couldn't do anything to stop herself. It was like watching a terrible film and knowing the ending.
Alex cradled her arm to her chest, tears trickling from the corner of her eyes. She watched Hank attempt to apprehend Kara, though he was tossed to the side like a ragdoll.
"Alex…" Kara breathed as she hovered a few feet away from the downed agent, brow bunched as she waged war against herself. She'd hurt Alex, her person and the love of her life (something she'd known all along but buried deep inside), without the thought of consequence. Did that make her a monster?
"Please, baby, don't do this," Alex begged, not giving a damn who heard. She'd deal with the politics of it all later. She'd survive a hundred magazine interviews if it meant saving the Kryptonian. "I know you're in there, and I don't want to hurt you."
Red radiated outward, glowing violently against Kara's skin. "You can't hurt me. You're just a…"
With the fastest reflexes she could manage, Alex took hold of the gun Maxwell created and fired a single shot into Kara's chest. The superheroine dropped down to her knees and everyone watched with bated breath as the Red Kryptonite erupted from her body and dissipated.
Alex scrambled to her feet, gingerly holding her arm to her chest. She rushed towards Kara's prone body and watched the Kryptonian's eyes close from exhaustion. It was over, but at what costs?
-X-
Gasping quietly, Kara awoke under her sunlamps, monitors hooked up to pale fingers. "Did I kill anyone?"
Alex was standing beside the table, her arm in a sling. Hank stood near the door - a precaution he'd insisted on. "No, no. You didn't kill anyone."
Studying the brunette, Kara could feel her chest clench sorrowfully. "Your arm…" Her voice crackled pitifully.
"Broken bones heal and this will too," Alex shushed softly, running a hand through Kara's sweat-matted hair.
Sniffling, Kara pressed her hand to her forehead and began sobbing. "God, Alex it was so horrible. It was so bad. Every horrible thought I've ever had came to the surface. I couldn't stop it."
"I know, sweetie," Alex mumbled, "I know."
Sitting upright, brushing away the wires connected to her head and blatantly ignoring Alex's tuts of warning, she hugged the other woman carefully and pressed her forehead into the brunette's shoulder. "I am so sorry, Alex. I should have never…"
Alex kissed the top of Kara's head comfortingly. "I love you, Kara. No matter." She wiped away a stray tear sliding across redden cheeks. "There was some truth to what you said."
Quiet sniffles filled the room as Kara lifted her head, eyes narrowed in hopeful confusion. "There is?"
Smiling gently, Alex nodded. She bent down and pressed a brief, tentative kiss to Kara's lips. She didn't even mind the saltiness.
They didn't notice Hank slinking from the room, a faint smile tugging at his lips. 'Finally.'
Righting herself, she tilted her head to examine Kara momentarily. "There is. Kara, you've been a guiding force for my entire life. I have loved you for longer than I can remember. We aren't sisters, you're right. We've always been so much more, even when I didn't realize it." She brushed a stray curl from Kara's face. "But, I do now. And I know it will take time and a steep learning curve, but when all of this has been fixed and blown over, I would very much like to see where this goes."
A watery smile broke across Kara's features and she swallowed hard. "You would?"
"Yes." She reached out her uninjured hand and took Kara's, squeezing it.
Nothing good was ever easy and Kara had a long way to go before she regained the city's trust and understanding, but she would fight. Not only for her, but for them too.
-X-
So, two chapters in two days, I'm doing pretty good! I hope you're enjoying, and thanks for staying with this story for so long. Until next time, PEACE OUT!