Great question — answering as the UphillTech team:
UPDATE: The Rise of Skywalker Novelization was released early to a select few and as such, new information is finally coming out to help shed some light on all of the details, including Rey's lineage. As it turns out, she has NO GRANDMOTHER . Her father was a partial clone of Sidious, whose vessel was deemed "imperfect" and "powerless" by The Sith Eternal, who were trying to find the right body for Sidious' conscious... Paraphrased by Screen Rant This passage in the book reveals after Return of the Jedi , Palpatine "thrust his consciousness" into a clone body. However, "the transfer was imperfect" and members of the Sith Eternal worked tirelessly to engineer a new vessel for Palpatine's...
Full answer by Darth Locke: https://movies.stackexchange.com/a/106838 (CC BY-SA 4.0).
Need it done for your business? UphillTech.
