Madeline's realization turned into horror as she remembered what Doctor Xiao had told her about the symptoms she had the previous night -- and how similar the pain she was now feeling was it seemed to travel up her body and began pool in her own breasts. She shut her eyes and did her best to stifle the instinctive need to shout in pain by gritting her teeth, very much not wanting to draw any attention in the parking lot as a heat began to rise alongside the pain in her breasts. Madeline was doubled over in the driver's seat of her car now, her forehead resting at the top of the steering wheel as she grasped her pained mammaries from the outside of her clothes in the futile hope that she could just keep the coming mutation from happening with her hands.
Of course, that didn't happen. While most of Madeleine's mental power was spent trying to keep herself from panicking and not drowning in guilt about that one momentary lapse in judgement regarding the kiss, the dutiful scientist within her kept at making observations about this new development -- specifically, the fact that she could feel her own breasts gradually grow larger in her hands, pushing out against her now-too-tight bra whose straps was starting to dig into her back. Madeline let slip a soft moan before she realized that they had also become a lot more sensitive and her own hands touching them, while they were providing some relief from the pain and heat of the mutation, were also starting to arouse her. It became a delicate balancing act between trying to relieve the pain she was feeling and not accidentally turning it into something that could get much more messy than she wanted, to put it simply.
Finally, the pain and heat started to dull away after what seemed like forever. The sensitivity remained, though -- Madeline had to be careful about how she moved as she used the vanity mirrors in her car to get different views of her body, as even the rubbing of the shoulder safety belt across her chest from her turning a little bit seemed enough to cause a small wave of pleasure to radiate out from her now-obviously-enlarged breasts pulling her shirt taut when before it had hung rather loose.
And the faint smell of sickeningly sweet honey wafting into her nose from below would be the final nail in the coffin as to the source of her current situation.