You can still kill these kids if you put your thinking caps on... Larian only half assed their force field to protect them
True, but the topic is more on the dialogue/interaction not being logical than the game's mechanics.
My issue is just that I don't think that the robbery interaction Mattis/Silfy have with the PC matches how they should behave with a Lolth-sworn drow, especially one that introduces themselves by basically saying that child murder is something that happens pretty regularly in their cult.
Mattis should be a lot more cautious and wary, and not attempt the robbery. Either refuse to trade and ask you to leave him alone, or just take the gold he can get out of you for normal trading and leave it at that.
