Part 2

Quest starts in winterspring.
Find annie in the Lothalor woodlands, dragonblight. She will be on the very corner of the map southwest there near the cliff.
Talk to her and an event will trigger where she'll freeze Annie and be hostile. Dps her down to ~50mil hp and she will freeze you and jump off the cliff. Wait till Annie unfreezes you then go to the ground level of wyrmrest temple and turn the quest in at Annie
She will offer you 2 quests:

First quest is to get the "pure silver ore", farmable off silver veins but only if you have the quest (?) (Not sure about this but apparently you can only mine it if you have the quest, don't finish the quest if you plan on doing it with alts and send it to all of them just to be sure)
Sindragosa's claw, drops from Sindragosa in ICC any difficulty
and Alodi's essence which you get from the second quest

Second quest takes place in Karazhan:
The quest NPC where you turn it in is just inside the main entrance in front of the butler.
Kill Moroes for the journal.
Kill Prince Malchezzar for the Dimensional Essence Container.
Turn the quest in at the NPC near the entrance, next quest will spawn alodi and finishing the quest will reward you with his essence.

DO NOT BE IN A GROUP WHILE DOING SINDRA OR KARAZHAN. If you can't heal dreamwalker ask someone to help you just for her and solo sindra.

End of part 2