User blog comment:Piyush Banerjee/Shin DxD 2 discussion/@comment-27083298-20181220171644/@comment-37165251-20181220185651

" Issei is also worried because of the 2nd Year class trip which means Koneko, Gasper, Ouryuu, Ingvild, Ravel will be going to Kyoto as well as Issei will be going there as part as a show for Oppai Dragon."

So it seems Ingvild is not totally out but her sleepyness is a remnant of her Illness