

Tengen thought yuki could've lost inside her own domain
Tengen says kenjaku would be fine inside yuki's domain with his SD, at first this seems like just barrier upscalr for kenny, but this also implies that Tengen doesnt think yuki with her domain is enough to beat kenjaku
If she did, then kenjaku's SD being good enough to clash with yuki wouldnt be a problem, since yuki should just kick his ass inside her domain (domain amp + Tengen should know yuki is immune to curse CTs) but Tengen doesnt seem to think that
Tengen also knows enough about kenjaku's strength since we see her comment on Kenjaku earlier