I think they said she was a....first generation? Pure? clone of Jango? Like, no deterioration in the genetic code or whatever?
If I'm remembering that right then she's probably not a Palpatine clone (unless someone was lying). But she may have been created as part of that research. Maybe Palpatine wanted to know if a Force sensitive clone could be made before he put a ton of effort into cloning himself?
Maybe somebody thought that Force sensitive clone soldiers would be a good idea, and Omega was their last effort before getting shut down?