And specifically, she said that a Sailor Moon character that she exorcized in George Lucas's name was turned into a "half-Ewok, half-Jedi". That's a very odd phrasing, since Jedi do not share a single distinctive appearance or body type, but Dead is clearly not at home in either the Star Wars or Sailor Moon continua. This is particularly clear when she says that she wasn't even aware who the creator of Sailor Moon was, which raises the question of why she was exorcizing a Sailor Moon character in the first place.

I have a theory of what happened and why, though. When an exorcism is performed, the influence of the original canon flows into a character when the name of the continuum's creator is invoked, forcing the Sue-wraith out of the body. The process is essentially powered by the canon reasserting itself on the infected characters through the exorcism and returning them back to their standard settings, like rebooting a computer after running an antivirus to get rid of malware.
Thus, it's possible that the invocation of a different creator tried to force the canon of an incompatible author, in this case George Lucas, into the form of the unnamed Sailor Moon character, and the reset didn't take. There were no standard settings for magical girls in anything that George Lucas has ever made, so the canon just fit the closest parallel with the incompatible command. The "being magic" manifested in Jedi characteristics, like Force abilities and mystical weaponry, and the "being cute" manifested as Ewok traits. By that logic, invoking Riordan in the Harry Potter universe would replace the wizard in question's Potterverse magic with Kane Chronicles magic, since the House of Life wizards are the closest analogue to the Potterverse wizards that Rick Riordan has written. The Sue-wraith would either vacate as normal or be destroyed by the shift, but the DIC and/or Medical would need to come in to sort out the problem, since nobody wants to see Lucius Malfoy with the ability to summon giant energy constructs. Nobody.