Illusion + Faction question for Enchanter

[Leeyuuduu]

I am a high elf and predictably dark elves are KoS to me, and with illusion they are apprehensive (I'm not agnostic). If I farm enough dark elf guards, will they eventually turn KoS to me even when I have dark elf illusion on?? Or will the illusion always set my faction with them to apprehensive? Just asking because I killed one or two and they're still apprehensive.