If you chose to skip [storyline=1413] and you currently cannot figure out how to complete Embers of Neltharion and in turn cannot complete Dragon Isles Pathfinder - DONT PANIC! this will explain what you need to do to complete "A Creche Divided"
If you chose to skip, this is the storyline you will follow: [storyline=5356].
After you complete all of those, the last quest required does not appear as a normal Campaign Quest.
You need to complete Return to Viridia to credit you for "A Creche Divided" - Return to Viridia will NOT show up on your map as a Campaign Quest.
To start the quest:
Go to this location: https://www.wowhead.com/maps?data=14433:768374
You will see Scalecommander Emberthal with an available quest. The quest icon will show up on your minimap; NOT as a Campaign Quest.
To finish/turn in the quest:
Go to this location: at https://www.wowhead.com/maps?data=14433:340568
You will see Scalecommander Viridia and you will be able to turn in the quest to them. Again, as of now, this does not show up as a Campaign Quest.
Thats it. You have now completed "A Creche Divided" for Embers of Neltharion.
To specify, I recently did the entire story. I chose to skip [storyline=1413] for time purposes. I did the entire Zaralek Cavern storyline but couldnt figure out how I missed this. I can confirm that even after you do all of the other story quests, this will work. After you finish the quests at Dragonskull Island, this quest shows up. However, it isnt immediately obvious that you NEED to do this quest. This is the skip storyline: [storyline=5356]