Rep with The Oracles. Changing rep!

hi every one. i make a mistake in Rep with Oracles in Sholazar basin.
in the last Quest that we choose one of Oracles or Frenzyheart, i kill Oracles npc and now i hated with oracles.

is there any way to change this Reputation?
any way to reset this rep?
i need to get rep with orcales.

Think you can do the dungeon kill quest again tomorrow. This time choose the right faction to team up with.