Tamora as a Machiavel in "Titus Adronicus"

Titus is a great play with very developed characters. What gives the play its cunning nature is the scheming characters such as Tamora and Aaron. What I would like to discuss is, how and where is Tamora a Machiavellian "princess"? Does she violate some of Machiavelli's strictures, and if so, where and how?

It's been about a year since I last read Titus Andronicus but in terms of the Machiavellian, perhaps it would be helpful to compare Tamora with Othello's Iago, or indeed with Aaron too? Just a thought, when i've re-read Titus i'll get back to you :D