And the Children Shall Lead

Drabble. There's a tradition in the House of Black, to behead house-elves, when they get too old... When someone puts itching powder in grandmother Irma's flask of medicine, the blame falls on Kreacher. But little Regulus knows who's really responsible for the prank. What should he do? After all, it is just a house-elf, or at least, that's what his parents say.