Tal'aura

From Memory Alpha, the free Star Trek reference.

Senator Tal'aura was a member of the Romulan Senate in the late 2370s.

In 2379, she secretly allied herself with Shinzon of Remus. After Shinzon led an uprising among the Reman slaves and Praetor Hiren rejected their demands, Tal'aura used a thalaron radiation projector to assassinate the entire Senate. (Star Trek Nemesis)

Senator Tal'aura was played by actress Shannon Cochran. In the novel series Star Trek: Titan, Tal'aura went on to become praetor after Shinzon.

In "Articles of the Federation", Chancellor Martok finds Tal'aura's voice to be similar to his late wife Sirella's, an in-joke by Keith R.A. DeCandido, as both characters were played by Shannon Cochran.