I shouldn't have... [She sniffles, loudly.] I was...s-so obsessed with Hayate, I cared more about beating him than actually helping you guys...! A-and now we might get exp-pelled...

I don't want to get expelled...I don't want us to have to split up...!

[She doesn't say it outright, but it's pretty clear - she feels like Yuma, along with Yuya, is her best friend as well. The idea of having to part ways with him like this is tearing her apart.]