[Riku being unphased by the violence isn't a surprise; she's seen younger people not even bat an eye at worse, but it's still not a good sign. Especially since the fights show no sign of stopping.]

Everything has a limit. You can only push so hard before it breaks. Something always gives.

[Be it their bodies or their trust in their trainer, something's going to give eventually.]

Do you really want to take the chance that it's going to be something you can never fix?