You recovered many relics and trinkets from the half-orcs at Pembar, but Faenhilith is wary still.
'${PLAYER}, while these half-orcs have a much greater cunning by far than common Orcs, they do not have the wherewithal to maintain discipline. They are greedy and unruly.
'I fear there is a powerful leader among them, who is utterly loyal to the will of Saruman. The half-orcs will not be dismayed from their task as long as this leader lives. I must ask you to return to Pembar and draw forth this leader.
'There is a horn of summoning in Pembar, within the southern entrance to the ruins, north-east of here. While it is a distasteful notion, blow upon the horn... the leader will no doubt answer your challenge.'
The summoning horn is inside the southern entrance to the ruins of Pembar, north-east of Echad Eregion.
Faenhilith has asked you to return to Pembar and use the Orkish summoning horn to challenge the leader of the half-orcs.
Faenhilith is at Echad Eregion, south-west of Pembar.
You should return to Faenhilith with news of your victory against Fauldush.