Lina stands abruptly

Lina stands abruptly, pulling the oversized t-shirt over her head in one fluid motion. The garment drops to the floor beside her bare feet, leaving her completely naked. The warm lamplight plays across her skin, highlighting the curves of her breasts—small, firm, with dark nipples pebbled in the apartment's cool air—and the subtle definition of her abdomen as she breathes. She looks exactly like Jane, yet somehow different—her posture more determined, her eyes harder.

"What are you doing?" I ask, my gaze instinctively dropping before darting back to her face.

"We don't have time to waste," she says, her voice steady despite her nudity. Her skin begins to shimmer, that now-familiar crystalline transformation spreading from her core outward. Her form elongates, shoulders broadening slightly, breasts swelling to nearly twice their previous size as the diamond lattice completes. The transformation leaves her taller, more imposing—no longer Jane's twin but something otherworldly, her crystal skin refracting the lamplight into rainbow patterns across the apartment walls.

"Name the chemicals and equipment you need," she commands, her diamond-form voice deeper, more resonant than her human tone. "Every specific item."

I swallow hard, forcing my brain back into scientist mode despite the surreal sight before me.

"Hydrofluoric acid—diluted to 15% concentration, lab-grade. Polytetrafluoroethylene base. Calcium gluconate. Dimethyl sulfoxide as a carrier. A variable-temperature hot plate with magnetic stirrer. Borosilicate glassware—at least two 500ml beakers. Digital scale accurate to 0.01 grams. Micropipettes. pH meter." The list pours from me automatically, years of laboratory training taking over. "Sterile syringes. Medical-grade silicone for coating. And I'll need pure samples of the original compound for testing."

Diamond Girl—Lina—stands perfectly still, her crystalline form unnaturally motionless as she processes my list. "Is that all?" she asks.

I nod. "Yes. With that, I can synthesize the neutralizing agent."

Without another word, she vanishes—the air displacing with a subtle 'pop' that makes my ears ring. The sudden emptiness of the room leaves me disoriented. I stand, pace the small living room, examining the photographs on the wall—Jane smiling at the beach, Jane at graduation, Jane with her arm around someone who must be Lina, though their identical faces make it impossible to tell who is who.

Twenty-three minutes pass by the digital clock on the bookshelf. I've nearly convinced myself she isn't coming back when the air shivers and cracks. Lina materializes in the center of the room, a large duffle bag clutched in her diamond hands. The bag hits the floor with a heavy thud as her crystalline form instantly melts away, leaving her human again—and completely naked.

She collapses to the hardwood floor, chest heaving with exertion. Her small breasts rise and fall rapidly as she gasps for air. Between her thighs, I notice a clear, pearlescent fluid seeping from her pussy onto the polished wood beneath her. Her legs tremble visibly, muscles spasming from apparent overexertion.

"Are you alright?" I ask, concern overriding any awkwardness as I kneel beside her.

She nods, still panting too hard to speak properly. "Yeah," she finally manages, gesturing weakly toward the duffle bag. "All your... chemicals and... equipment. Stole it... from college laboratory."

Her head falls back against the floor, dark hair fanning out around her face. "Pushed too hard... to return teleport here," she gasps. More of the slick fluid leaks from between her legs as her thighs quiver. "Ignore my pussy... I'm a virgin and that's just..." She doesn't finish the sentence, her eyes closing as she focuses on catching her breath.

I glance at the duffle bag, then back to her **** form sprawled on the floor. The contrast between the unstoppable diamond warrior and this exhausted young woman is jarring. She looks so much like Jane in this moment—the same face I'd watched sleep beside me countless times—that my chest aches with conflicting emotions.

"Let me help you up," I say softly, reaching for her hand.