The Hat is Never Wrong

Bellatrix reflects on the death of Lily Evans and wonders why everything had to happen the way it did. Did she make the right choice by becoming a Death Eater to protect her? Or should she have gone after Lily instead? Written for Stupid Cupid Unusual Pairings challenge. AU where Bellatrix is one year older than Lily, unrequited Bellatrix/Lily. One shot, rated for character death.