Hey, so i was attempting to complete the Nightfae Assault today but it seems during the Rescue sequencecs with Lady Moonberry, i couldn’t find Margrave Sin’dane anywhere in the zone.
She supposed to be at 22.0 55.0 but i couldn’t find her.
i even use /tar Margrave Sin’dane and checking every area in the sequences but it seems she’s completely gone.
I don’t know whats happening because this assault was worked fine for me last week, its just weird i couldnt complete this assault today
Pls help 
Having the same problem. Margrave is nowhere to be found.
Relogging worked for me. Hope it helps you too.
sadly it doesn’t worked for me she’s still missing
I had to use a different computer, but was able to complete.
Having the same problem.
Tried to /reload the UI, didn’t fix it.
Logged out, didn’t fix it.
Shut down the game completely, restarted, didn’t fix it.
Gotta love the life of an unpaid beta tester.
/moo 
Figured this out. The coords of 22.0,55.0 are incorrect. It is more like 24.0, 54.0.
Also, found a Youtube Vid that shows you where to find her: https://www.youtube.com/watch?v=GWEfswQZeNY
She’s on a circular platform, so when you cross the bridge at the start, bear to the left a bit, and the circular platform is on the left.
Good luck.
/moo 
Thanks. That definitely solved the problem.
Thanks, I was about to give up on this assault.
Hands down one of the most annoying quests in WoW.
Thank you so much!
Thank you sooo much. This was the info I needed, especially the description of the little platform she’s on in addition to the corrected coordinates.
Best post on this thread! Thanks so much for your explanation!
You rock dude! Thanks!
As an added note, I was having trouble with this quest as well. There is a rare which spawns outside the rift (Eketra) whose skull mark from my rare scanning addon was covering the quest marker of the Margrave. If you have a rare scanning addon just head to Eketra’s location to find her.
First time I did this quest it was the same problem since then it was easy and today he’s gone again