You shoot her a look, before returning your attention to the two -three? two and a half? probably two- girls in front of you. "Don't ever hesitate to ask if you need cleansing," you say. "I offer it freely, and I only ask that you be nice. To us, to everyone who might come our way."
"You- you'll really let us stay here?" Noriko asks, her voice rough.
"We will," Mami says, smiling. Her hand finds yours under the table, squeezing gently. "Thanks to Sabrina, Mitakihara has no problem supporting more magical girls."
"We don't ask for much," you say, picking up the thread of conversation from Mami. "There are other matters that need to be discussed in the long run, but you must be tired, so we'll keep it short for now. Hunting is optional - but we ask that you call in any Witches or Familiars you might encounter. Similarly, if any other magical girls start causing trouble, let us know. Or if there are any magical girls in trouble. And... don't give Grief Seeds to Kyuubey."
"That's- that's it?" Noriko says. She visibly gathers herself -herselves- together, both bodies straightening up to stare at you. It's almost eerie, the impression somewhat ruined by the fact that her eyes are still teary.
"I want to help," you say.
"We want to help," Mami supplies.
"And I can sustain us all without trouble," you continue. "Yes, that's really it. There are things coming up that you will need to be informed of, but your stay here isn't contingent on them, and there are no strings attached to my help, barring what I've already said."
"T-then. We're glad to be here," Noriko says. "Thank you for having us."
"Thank you," Akemi echoes.
"You're welcome," you say easily, still smiling at them. "But I still haven't cleansed your Soul Gems yet."