If Toma was hoping that Rose would be similarly silent following her earlier vocalization, well... that would mean he hasn't been paying attention.

"I can't help but notice this bath's cleansing properties are more valuable to you than its restorative properties," she says, eyes still closed. "Regeneration like yours must be useful with a brother as brash as yours."

Once she says that, though, she does return his sidelong glance. She wants to see whether the "brother" button is as potent as it seems.