It seems likely that after ten years and after becoming senator she chose another double after Sabé (and with the Nabooans' heavy make-up the double doesn't necessarily need to look much like Padmé anyway ;-)).
While the English Wikipedia article doesn't give much information on this, its German version says that it was a double named Cordé, which IMDb seems to agree with:
Cordé was a handmaiden and double for Senator Padmé Amidala of Naboo.
Cordé replaced Amidala's former decoy, Sabé, who was a decoy while
Amidala was Queen of Naboo.
She was killed in an assassination attempt on Amidala when she
returned to Coruscant for the Senate vote on the Military Creation
Act. The person responsible for the attack was bounty hunter Zam
Wesell, who worked for the Confederacy of Independent Systems via
fellow bounty hunter Jango Fett.
Cordé died apologizing to Amidala, disheartened in thinking she had
failed her duty to the Senator. On the contrary - Padmé was
heartbroken by Cordé's sacrifice, regrettably accepting that she had
perfomed her duty in order for the Senator to proceed with her vote
for the Military Creation Act. Reluctantly, she left the bodies of
Cordé and the other Royal Guards behind, guilt stricken over their
rising to the greater good at the cost of their lives.
In addition to that, she is also directly mentioned in the script and the movie made out of this script:
Klaxons blare, alarms sound! CAPTAIN TYPHO and the TWO ESCORT PILOTS
get up and run to where SENATOR AMIDALA lies dying. Beyond, ARTOO
DETOO drops down from the Naboo Fighter and rolls toward the wreckage.
The FEMALE ESCORT PILOT kneels by SENATOR AMIDALA and takes off her
helmet, revealing SENATOR PADME AMIDALA.
She gathers up her decoy double in her arms. Cordé's eyes are open.
She looks up at her.
CORDÉ: ... I'm sorry, m'lady... I'm... not sure I...
CORDÉ dies. PADMÉ hugs her.
AMIDALA: No!... No!... No!...
PADMÉ lowers CORDÉ to the ground. She gets up and looks around at the
devastation. There are tears in her eyes.
AMIDALA: I should not have come back.
CAPTAIN TYPHO: M'Lady, you are still in danger.
Amidala says nothing.
CAPTAIN TYPHO: This vote is very important. You did your duty and
Cordé did hers. Now come. (she doesn't respond) M'Lady, please!