So, the second Potema quest will not trigger for me. I know it triggers when you level up. I'm sitting at level 60 something right now, but have been waiting since level 20ish.

Does anyone know why this happens? Is there any way to fix it?

Here is my mod list in order:
Dawnguard
Unofficial Patch
Parthurnaax Fix (SW)
Master Hunter's Bow (SW)
Smithing Perks Overhaul
Whiterun Enchanting table
Northborn Fur Hoods
Lore Friendly Armor
More Training
Hunter Armor No fur
Torch of everlasting
no spinning death anim
civil war cleanup (SW)
Iron Armor Sleeves
Sabre Cat Gear (SW)
Breezehome Extra Storage (SW)
Wearable Lanterns (SW)

Any ideas would be appreciated.

I'm no expert at this but have used console commands a few times to move a quest along. On this page under Bugs there are some suggestions. It looks like you need a setstage command to get things moving. From what I see, I think it's setstage MS06 50

Anyone feel free to correct me. I don't want to mess up anyone's game. Good luck.

http://www.uesp.net/wiki/Skyrim:The_Wolf_Queen_Awakened

I tried that once before with no effect. I haven't even received the letter from Falk yet. I think that needs to happen somehow before it will start.

That's interesting. Did you try the final stage for the previous quest just to make sure it sunk in?

I think I'd try setstage MS06Start 250. Good luck again.