I was unsure about whether crayons appearances counted, but yeah, I completely forgot about the Oracle having her show up in spirit. Just feels like that point of the Sweeping Fantasy Epic where seeing entities like Tiamat isn't unexpected. (I expect The Dark One to show up in person, for instance. Right after V Disjoins the Crimson Mantle.)
And I think, despite Lee saying he'd gotten her to put her vengeance against Darth V on the back burner, I'm not sure that's the case. Guess it'll be some other creature that actually has had one appearance so far.