Rose maintains to this day she is innocent. Although she has no intention of appealing. Read a few books on the case including one by their daughter.
She killed Charmaine on her own. Because records showed Fred was in jail at the time.
She also took part in the sadistic sex attack on Caroline Owens they're babysitter.
She clearly was involved, and I believe the driving force between the two. She wore the trousers out of both.