Saché was the oldest of the handmaidens, Yané being the youngest. During the Trade Federation Crisis, she and Yané remained behind when the Queen and the other three handmaidens fled with the Jedi.
What happened to her during the time when Amidala was gone is unknown, but given she was with GovernorSio Bibble, it is likely that she was also recaptured.
Of all the handmaidens, Saché was the only one not to attend the Celebration Parade, even though she was present at Qui-Gon Jinn's funeral.