...Taking a deep breath to ease her nerves, she made a decision. "I'm gonna do it." She decided. "Even if I... stop existing... i-it's better than lying to them." Determined, she clicked the button.
Immediately, she was hit with a wave of discomfort, her body itchy. Her crotch flared with pain. She felt a pressure on her head, then another on the soles of her feet, feeling as though she was being pulled and stretched to her limits. Her clothes became tighter, starting with the crotch of her skirt-shorts as a penis grew in place of her vagina, then spreading to the rest of her body as her height changed.
Her body stretched back to the original height of Jeff, before being inflated to the bulkier body of a 16-year-old boy, her clothes ripping in the process, meanwhile hair shortened and darkened. Jennifer felt as the memories of Jeff's original life invaded her mind, now altered to account for Alan no longer existing.
During this process, the Chronivac continued its physical changes, her clothes stretching, changing color, and stitching back together in a way that formed back into Jeff's original outfit. And as that change was finalized, and she felt her own memories being stripped away in favor of Jeff's, Jennifer leaned back in her chair, accepting whatever fate awaits her after this moment.