User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-34061653-20181013135327/@comment-2601:87:8300:20D0:C4B6:9DBB:5BCC:2073-20181018102239

I  don't know if Ingvild would join the tournament, but at the very least not in the next match. This is just a guess but I doubt she's only worth one piece so to put her on the team they'll have 1 or more people off the roster. The only way I see is that if Grayfia got injured before the match, and test from her or a plan from Ravel that she'll join.