User blog comment:HalointheSkye/Volume 3 Chapter 9 Teaser - This is bad.../@comment-10380701-20160115033736/@comment-1292715-20160115040430

There's the possibility of the source of her aura generating getting damaged to the point where her aura just up and shuts down. Even if they do repair her, her aura might be completely different from before as a result, thus she might not be the same Penny we all know, especially if her memory gets wiped and her personality changes.