As Trinity watched Radiance succumb to her mind-controlling shimmer, she felt something close to rapturous, religious ecstasy. Even in Radiance's weakened, distracted, tumultuous state of mind, it took every bit of Trinity's strength to overpower the superhero's fierce will. Trinity found herself sweating and shivering for several long seconds as she strained herself like never before, pouring every last drop of her power into Radiance's mind in order to try and quench the outraged, defiant impulses fighting to well up inside of her. Normally, subduing someone who was as off-guard as Radiance had been would have been child's play, but the hero was still, despite everything, living up to her reputation and giving Trinity the fight of her life.
But it was all worth it.
When Radiance started to succumb, the image of her eyes slowly changing color was immediately seared into Trinity's memory. It was the kind of thing she'd barely dared to fantasize about. Even when she saw her glowing, purple shimmer start to bleed under Radiance's skin, spreading unevenly but inexorably through her own fingertips and into her rival, she couldn't bring herself to believe that it was really happening. But once Radiance's eyes started to flicker, her irises turning purple bit by bit as she stared up at Trinity with a shocked, disbelieving expression, a thrill raced down Trinity's spine. Filled with adrenaline and emboldened by success, Trinity kept pushing. She could feel Radiance's mind shrinking and crumbling underneath her.
This was real. This was actually happening.
She was winning.
That realization prompted a nausea-inducing whirlwind of different, conflicting feelings within her.
The giddy euphoria of victory was carrying Trinity into blissful, intoxicating domspace. She felt more powerful than ever. This was the dominance she'd craved, after so long under Radiance's control. Brainwashing a helpless civilian in the bathroom of a dyke bar was nothing compared to this. Radiance was perhaps the most powerful superhero in all of Future City, and now she was in the palm of Trinity's hand. The intense submissiveness she'd felt towards Radiance moments ago was utterly forgotten. Trinity's mind was racing with the prospect of all the things she could do. She pictured Radiance, wearing marks of Trinity's brainwashing openly, ripping apart a bank vault and delivering its contents to her new mistress. Then she pictured Radiance in an altogether different kind of situation, naked and mewling, ready to be used however Trinity pleased.
The supervillain was instantly wet.
But then, there was the other part of her. The part Radiance had created. She couldn't suppress it, no matter how much mind-controlling Radiance made her feel like her old self again. That part of her simply wanted to be good. It wanted to obey, protect and serve. Taking advantage of Radiance in any way was wrong. It was against the rules. Those things were now concrete mental barriers in Trinity's head. The very thoughts she was having about Radiance were unthinkable, and she couldn't help feeling a reflexive disgust with herself. She was supposed to be a hero now! She wanted to help people!
So why did taking control of Radiance send these delicious shivers down her spine?
It felt just as wrong as it did right. For as much as Radiance had warped Trinity's mind, perhaps some part of her subconscious remained beyond the reach of even Trinity's own shimmer. Perhaps her body itself was rebelling against the conditioning, insisting on the kind of sinful pleasure she couldn't stop herself from daydreaming of, even as it made her stomach turn.
And then there was yet another voice in Trinity's head, this one tinged with a strange kind of regret. Did she really want to see Radiance like this? Did she really want to do this to her? It felt wrong, somehow. Not morally wrong. Something else. Trinity couldn't put her finger on it.
In the end, though, the force of what Radiance had done to Trinity won out. The commandments she'd forced into Trinity's head were iron. They were buckling under the weight of her urges, but they wouldn't break. Trinity let out something of a sigh of relief as the storm inside her settled, and a single, simple idea grew to fill her mind.
She needed to be a hero.
"G-gguh," Radiance groaned. She seemed to be trying to stir, but she was moving like she had lead weights wrapped around each of her limbs.
"Shush now," Trinity soothed. Now that she'd figured out what she wanted, she couldn't let this opportunity slip away. She focused herself on subduing Radiance. "No need for that. It's too late. I'm already in your head. Just relax."
"N-no," Radiance protested. Her slurred, labored words betrayed how little resistance she had left. "S-stop."
Trinity shook her head. That act of refusal, as she looked down at Radiance and held her head between her hands, felt unbelievably powerful.
"I'm sorry," she explained. "But I have to do this. You made me that way. Don't worry. You can trust me. I'll do the right thing. I'll help people. Remember?"
Radiance's flickering eyes flashed with concern and confusion. They remained piercing and brilliant, but they were slowly, inexorably, being filled with purple shimmer. Glowing little pools of infection spread and expanded, joining up with one another until almost none of Radiance's true eye color was left. Then, even her pupils started to change color, until after a few moments more, her eyes were nothing more than glassy, shimmering, purple disks. She slumped, arms going limp as the part of her mind that worked her muscles gave up. Trinity's breath caught in her throat at the sight of her superhero rival going as limp as a rag doll.
That was it. It was over.
Now that she had Radiance completely entranced, Trinity could afford to take a moment to think about the enormity of what she'd just done. Once again, the siren call of her former life as a villain reared its ugly head. Until minutes ago, she wouldn't have hesitated to take ruthless advantage of the situation. Somehow, the knowledge that Trinity's mind had been altered against her will did little to undermine her resolve. It just didn't seem to matter. What Radiance had done to her felt like revelation. She couldn't close her mind to it, no matter what.
She had to embrace it.
"You're going to let me be a hero," Trinity told Radiance again. This time, Radiance didn't struggle. She just nodded dully. Trinity could barely contain her excitement. "Say it."
Radiance twitched a little, but she no longer had the mind or will to keep her mouth from obeying. "I'm going to let you be a hero."
Trinity let out a giddy little giggle. She couldn't believe how lucky she was. Becoming a hero was her dream. The fact it only been her dream for several minutes did nothing to diminish her enthusiasm for it. She wanted to enforce the law and the rules. She wanted to help and protect people. She wanted to make people feel good. Surely being a hero was the apex of each of those things, wasn't it? That was clearly what Radiance had been driving at. She'd been instructing Trinity in her own code of morals. It only made sense that she would now want to follow in Radiance's footsteps. She just wished Radiance had seen it that way herself. Mind-controlling her was wrong, but it was also necessary.
It was for the greater good.