Well, the two of them are idiots if they completely obey and play Kali's game as is. Hopefully, Toina will let Loki & co know and go with Toine (who's lost her rationality in this situation) more as to play along as a distraction. Which would then let their Famila interrupt the ritual, though I would assume for story purposes it wouldn't happen until after the climax of the fight but before any of the 4 of them die.
Loki certainly doesn't seem the type to let what is effectively the kidnap/blackmail of 3 of her Famila to go unpunished, regardless of the forced fight's outcome.