You can let the tiefling kids die. It's like you're completely blind to the scenario and circumstances at hand. The tiefling kids do something stupid, like get drawn in by harpies or steal from the druids and it can cost them their lives if you don't save them. The goblin kids are hitting a bear with stones and you can choose to kill the bear or the goblin kids. Honestly I find the goblins much more shitty than the tieflings.
It depends on how you play, so what in the world are you getting so unnecessarily triggered over?