My speculation has been that they promised to get Kara more con appearances. If you look at her fancons page (
link) she's attended as many cons this year as she did in total from 2014 - 2018. In the main post, the motives section fleshes this out a lot more and includes several tweets from prior years where she's begging her fans to help her get con appearances.
So it appears as though she took a consensual event that occurred several years ago and that she had probably forgotten about and then spun it into something more sinister sounding.