The most frightening thing was that the virus had a potential to spread from one victim to another at a fast speed, and it didn't need Ainsley's active control to do it when the virus was already strong.
To achieve this effect, Ainsley had to divide a small part of her consciousness to enlighten the Charm Aura that she formed into a love virus so that it could behave like the real virus.
Ainsley learned how to divide a small part of her consciousness from Asmodeus and also used her luck manipulation ability to give the virus some luck.
Yes. After various uses, although the luck manipulation ability still stayed at the level of boosting someone's luck or decreasing luck, Ainsley could already apply this ability to various things.
Including her own charm ability!
It was really hard to create this small love virus, and the fight between the mid-level spirits had started, yet Ainsley was still busy with her trial and error.