Merilos has repaired as many of the keys as she could, and you should now bring them to Candelleth.
'I have done what I could, but about half of the keys were broken beyond repair, or were missing their pieces.
'Return with these repaired keys to Candelleth, and give her my regards. Would that I could have repaired them all, but know that I succeeded where most others would fail. It was not an easy assignment.'
Candelleth is at her Elf-camp in Tâl Bruinen.
Merilos has repaired as many of the keys as she was able, and you should bring them now to Candelleth.