Yes, but she was the brains of the operation...
:^) I think she was given a lot of the blame, was looked on as some kind of manipulative witch, but the reality is, she wasn't a popular monarch, was put up as the puppet ruler by Julius Caesar, and kept in power at the whim of Rome, until Rome was run by Octavian.
And she was a very bad influence on him...
That was her main appeal -- plus, she gave him children, they got married off into some of Rome's finer families, thus Marc & Cleo's living descendants are probably quite numerous (and completely unaware of it), given the length of time involved.