Unlocking oddly specific materials.

[Jojoya]

That involves finishing 2.0. Once she learned about the restoration she did manage to finish that ....

But she can't buy the oddly mats.

I know for certain you need to have picked up the second Skysteel tool quest before the materials will appear on the vendor. You can't buy the materials with scrip in advance to have them ready before starting the quest.

Other than that, the only other thing I can think of is maybe House of Splendors must also be unlocked since that's the other source besides the Restoration to buy the materials. Might want to check with her to see if she's done that if she rushed through the rest trying to get the Restoration unlocked.