User blog comment:Omega natsu2/Chapter 369: The Place Prayers Reach, Predictions./@comment-4449950-20140128032255/@comment-4489126-20140128174612

I'm not saying that Kagura's role is not over, Misk. I said that Hiro can always create new ones. If you buy the volumes and read the afterwords, then you would know that Hiro himself stated that Levy was not planned to be a character worth noting, thus why I mentioned her. But look at her now. In other words, roles change depending on the writer. And who's not to say the same will apply to Kagura?

And again, even if her role with Jellal is over, it does not completely omit her from Fairy Tail. Character roles change. Like B214 stated, it may or may not be something related to Erza. Hiro did hint that she will return by making her Erza's little "sister." The way I see it.