There's an entire dialogue going, as he carefully writes messages and receives them; Gaia's somewhere in this festival right now, and may be enjoying the distraction that it's providing.

"If it helps she doesn't want to kill you." That probably doesn't help at all, but he sounds confident it absolutely should. "She intends to try to not do any permanent harm, but when the only fighting she's known is fighting for her life .. ah, muscle memory? May take over."

So in a way it'd be training for both of them. "It might be a good time to practice any defensive techniques as well. Just having a strong offense isn't always enough." Especially with a giant hammer swinging for someone's head.