Alira bug - Deal with the bandits

Here is my problem :

A friend of mine helped me doing the quest deal with the bandits. He already had completed the quest and killed all the bandits.

So we went to Alira first, and i chose the option "help". However it didn't work and we were forced to kill her, and she didn't drop her amulet.

We next went to kill the other bandits, and they dropped their amulets.

So now i'am stuck, i tried to kill again Alira but the western forest map won't reload even if i leave the game / reconnect.

Any help?

https://s.gks.gs/img/img/02-2014/screenshot_0004.png

You have to make a new instance of the Western Forest. While outside an entrance or waypoint there, hold down control when you click to enter and select New.

Okay thanks a lot!