TheWoWDBCorastrasza is found at 29, 25 in Coldarra. She's located on one of the floating rings above the Nexus, so you need a flying mount or someone to summon you up there.
Quest
Corastrasza
A World of Warcraft quest in Borean Tundra. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
make sure you're flying directly vertically one of the floating platform floors so that if you do make a mistake and are defeated you will parachute down to the platform instead of all the way to the ground below.
Keep your comments on the correct part please, to make it easier for those looking for information.
Regarding Corastraza's location. Here's a map for those wo co-ords. http://www.wowhead.com/?maps=3537:292250
Basically, when you're in Transitus Shield, mount up and head straight from the direction of the flight master. She is on the top 'ring' (the one broken into three pieces, on the most western one).
Quest facts
LevelLevel 30
ZoneBorean Tundra
Quest ID13412
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(13412))
Description
Greetings, {class}. Might I impose on you for a favor? Corastrasza is the sister of Raelorasz - the red dragon in charge of our outpost here. Against his will, she has ascended to one of the upper rings of the Nexus to observe some frighteningly powerful blue drakes. Though he will never say it, he worries about her, and would welcome any news of her well-being. Please seek her out. Ask her to put her pride aside and send word to her brother.
Community notes from Wowhead · 24 comments
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Reward details
Reputation: The Wyrmrest Accord +25
With the Blue Dragonflight's violent upheaval against all mortal users of magic, the remaining dragonflights have banded under the leadership of the Red Dragonflight to combat their wayward kin.
Reputation group: Wrath of the Lich King.
Other quests in Borean Tundra that reward The Wyrmrest Accord reputation: Basic Training (+250), Drake Hunt (+250), Cracking the Code (+250), Hatching a Plan (+250), Puzzling... (+250), The Cell (+250).
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.