[Lorraine]

Some people sell Fairy Dust - It's not the rarest thing out there, but again it's not overly common either, it's more of a "be at the right place the right time" kind of thing.

Sometimes you could pick some randomly off of merchants as well.

If she doesn't respond to the Soil quest, all you gotta do is turn in some bone chips (a couple of stacks maybe? Could be less, my memory is failing me atm) and then try again.

The combine cauldron for Ronium needs faction with Temple of Solusek Ro as well, gotta keep that in mind too, there are a few ways to increase it (cutthroat insignia rings turn in to the orc at Ro desert is one of them) -- Also, cauldron is LORE (iirc) and Soil of Underfoot is LORE as well, so you got to keep that in mind when you try to turn the greave/boot molds into wearable armor pieces and plan your trips accordinly (again a pocket porting class will minimise the travel times tremendously).