Bana Breemu was a character cut out of Revenge of the Sith. She was a member of the Galactic Senate representing the Humbarine sector and was part of the Delegation of 2,000. If you’re wondering who the Delegation of 2,000 were they were a group of senators who had a lot of concerns about Supreme Chancellor Sheev Palpatine (for good reason!) In another deleted scene from Sith Padmé references this delegation.
Below is a compilation (of mostly deleted scenes) that show the beginnings of what would become the Rebel Alliance. Bana Breemu shows up at about 2:35. Actress Bai Ling played Breemu.
The character Bana Breemu originated in the now Legends novel Labyrinth of Evil by James Luceno.
Check out the entire list of women in 365 Days of Star Wars Women in the Women in Star Wars Index. It includes highlights from each post plus notes which posts include new 365 interviews with actresses, writers, artists, and more.