I think it's more talk about her conduct during the match; since Eirin in her 'duty' went far beyond Kaguya's plans, for one assailing Keine so viciously when it was only Mokou that was supposed to recieve it. I do believe the fact Keine endured such attacks is among the things that earned Kaguya's respect for Keine.
A scene like this may or may not happen once in a thousand years.... ... ... alright.This'll be a sight worth seeing...Princess?Eirin is always saying these things, right?We'll bring up the problem points so we don't forget what went wrong.Episode 311: Unusual sceneFrom the Artist's Pixiv pageI'll also enter again...Um... hey...Yeeeeees.
Quiet now....Reflection MeetingLunar Review MeetingThe Eirin of late has been off for various reasons!We can talk about this at a later date.If we don't do something soon, we'll smell of sweat!I guess we'll be doing this no matter what.Well, I suppose that's true...Reflection MeetingWow~And we've surely sweat a lot today...But, the assembly hall is going to close up pretty soon.Well, that's true.Alright, let's continue this Reflection Meeting in the bath!