
I for one was disappointed that Word of God decided Rey didn't have a grandmother. This is mitigated, however, by the fact that such a claim is ridiculous and I don't consider Word of God canon. Even so, it's still quite unacceptable. So I have decided that in fact she has three. Firstly, there is her maternal grandmother. Even if Palps Jr didn't have a grandmother, her mother would have, lol. That's just, like, basic genealogy. Secondly, since Palps Jr. doesn't really look much like Palpatine, I'm going to say that while he was created with the aid of Kaminoan cloning technology, he was not actually a clone. Palpatine wanted to create a son with great Force power, so he chose to use DNA from the three most powerful Force sensitives he knew of: himself, Shmi Skywalker, and (his ex) Mother Talzin. Shmi Skywalker, unbeknowest to the Jedi, was actually an even more powerful Force sensitive than Anakin, and in fact Anakin's existence was actually due to a combination of her desire for a child and her natural ability to use the Force to create life. Palpatine spliced together the DNA in a modified Kaminoan cloning cylinder to create a literal designer baby, though because he had not payed enough attention to Plagueis's 'How to Create Unnatural Force Babies with Science!' class, he messed up and the unlimited power Force powers he expected the baby to have ended up skipping a generation.