Inside Supergirl's mind, a fierce battle raged as she struggled against the formidable powers of Vartox.

A swirling vortex of energy pulsed with each clash between her consciousness and the formidable powers of Vartox. Vartox, with his mastery over the intricacies of the mind, wielded his abilities like a skilled surgeon, probing Supergirl's thoughts and emotions.

Vartox's manipulation of Supergirl's mind was a chilling display of his mastery over the complexities of the psyche. With a subtle flicker of his psychic energy, he wove intricate illusions that danced like shadows across the canvas of her consciousness. Vivid scenes unfolded before her, each one a twisted reflection of her deepest fears and insecurities.

In one illusion, Supergirl found herself reliving the moment of her greatest defeat, the crushing weight of failure pressing down upon her like a suffocating blanket. She watched helplessly as her adversaries triumphed over her, their mocking laughter echoing in her ears like a haunting melody.

Another illusion thrust Supergirl into a world of darkness and despair, where her every action seemed to lead to disaster and ruin. She stumbled through a labyrinth of twisted corridors, her path blocked at every turn by obstacles too insurmountable to overcome. Each failure, each setback, served as a damning indictment of her perceived inadequacies, eroding her confidence with every passing moment.

Yet despite the overwhelming onslaught of Vartox's illusions, Supergirl refused to succumb to despair. Supergirl was no stranger to adversity, and with every ounce of her being, she pushed back against the onslaught. She delved deep into the recesses of her mind, summoning memories of her triumphs, moments of unwavering determination and courage. With each recollection, she fortified her mental defenses, erecting barriers against Vartox's insidious influence.

Supergirl clenched her teeth, her brow furrowing in concentration as she her best to resist Vartox's relentless assault. "I won't let you control me, Vartox," she growled through gritted teeth, her voice echoing within the recesses of her mind.

But Vartox only laughed, his mocking tone reverberating through the darkness. "You are powerless against me, Supergirl. Your will is no match for the might of my mind."

Supergirl's jaw tightened, her resolve hardening as she pushed back against the tide of Vartox's influence.With a steely resolve, she focused her mind like a laser, channeling her inner strength into a beacon of hope amidst the darkness.

With a mighty roar, Supergirl unleashed a surge of raw power, a manifestation of her indomitable will and determination. The energy crackled and surged, pushing back against Vartox's influence with a force that reverberated throughout her consciousness. For a fleeting moment, it seemed as though victory was within her grasp, as though she could break free from the shackles of Vartox's control.

But Vartox was not so easily defeated. With a sinister grin, he intensified his assault, redoubling his efforts to subdue Supergirl's mind. Waves of psychic energy crashed against her mental barriers, threatening to breach her defenses and plunge her into darkness.

Supergirl felt that for every step forward she took, it seemed as though Vartox pushed her two steps back. His illusions grew stronger, more vivid, as he delved deeper into the darkest corners of her subconscious. Memories of past failures taunted her, their echoes reverberating through the caverns of her mind like a relentless drumbeat.

Vartox showed the most insidious illusions of all that dredged up more memories of Supergirl's past mistakes and shortcomings. Supergirl watched in horror as scenes from her past played out before her eyes, each one a painful reminder of the times she had faltered and fallen short of her own expectations. The sting of regret gnawed at her soul, a constant reminder of the burden of responsibility she carried as a hero.

"Give up, Supergirl," Vartox taunted, his voice echoing in the depths of her mind. "You cannot hope to resist me. Surrender, and all of your pain will end."

Supergirl gritted her teeth, her brow furrowing in determination as she pushed back against Vartox's influence. "I will never surrender to you, Vartox. I am stronger than you realize."

Vartox's laughter filled the void around her, a chilling sound that sent shivers down her spine. "Your bravado is admirable, Supergirl, but futile," he taunted, his voice echoing with a sinister edge.

Supergirl gritted her teeth, her muscles tensing as she strained against the suffocating weight of Vartox's influence. Each passing moment felt like an eternity, the boundaries between reality and illusion blurring into a disorienting haze.

A vision flickered before her, an image of her loved ones standing before her, their faces twisted into expressions of disappointment and disdain. Doubt gnawed at the edges of her mind, threatening to erode her resolve with its insidious whispers.

"No..." Supergirl whispered, her voice trembling with uncertainty as she reached out towards the spectral figures before her. "This... this isn't real."

But even as she spoke the words, doubt crept into her heart like a shadow, casting doubt upon her convictions. The lines between truth and falsehood blurred, leaving Supergirl adrift in a sea of uncertainty.

With each passing moment, the weight of Vartox's influence grew heavier, pressing down upon her like a suffocating blanket. It became harder to distinguish between reality and illusion, her thoughts muddled and clouded by the insidious tendrils of his hypnotic control.

Supergirl's muscles trembled with the effort of resisting, her willpower faltering under the relentless assault of Vartox's power. She fought to hold onto her sense of self, to cling to the flicker of hope that burned within her heart.

But as the tendrils of Vartox's influence tightened their grip, Supergirl could feel her strength waning, her resolve slipping like grains of sand through her fingers. Desperate to break free from Vartox's grasp, Supergirl summoned every ounce of her inner strength, her mind ablaze with determination as she launched one final, desperate assault against her adversary.

Vartox's smirk only widened, when he felt her last attempt, his eyes gleaming with triumph as he sensed her resistance faltering under the weight of his relentless assault. "You fight well, Supergirl, but in the end, you are no match for the power of my mind," he taunted, his voice dripping with arrogance.

Supergirl gritted her teeth, her muscles straining as she struggled to hold onto her rapidly dwindling sense of self. "I... won't... give in," she gasped out between clenched teeth, each word a struggle against the overwhelming force bearing down upon her.

But despite her determination, Supergirl could feel her defenses crumbling, the darkness of Vartox's influence seeping into every crevice of her consciousness like an insidious poison. Her thoughts grew hazy, her vision blurring as she fought to keep her mind from slipping into the abyss.

All of Supergirl's effort was futile. With a triumphant smirk, Vartox's influence grew stronger, enveloping Supergirl in a shroud of darkness as she succumbed to the depths of his control.

"No!" Supergirl cried out, her voice echoing through the recesses of her mind as she felt herself being pulled further and further into the abyss. She struggled against the invisible bonds that held her captive, but it was no use. Vartox's power was absolute, his hold over her unbreakable.

As the darkness closed in around her, Supergirl's vision faded to black, her consciousness slipping away into the void.