FLT ATTENDANT WORKING A B757-200 FROM THE MAINLAND TO LIH WAS INFORMED ON ARRIVAL THAT SHE WAS TO RETURN TO THE MAINLAND WITHOUT A REST PERIOD. THE FLT ATTENDANT NOTIFIED THE AIRLINE THAT SHE WAS TOO FATIGUED TO WORK BACK.

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I WAS TOLD BY A COMPANY SUPVR THAT MY FATIGUE ON THIS FLT WAS DETERMINED AN 'UNEXCUSED FATIGUE' AND THAT THE AIRLINE WASN'T RESPONSIBLE FOR IT. I BELIEVE THAT THE AIRLINE HAD SOME RESPONSIBILITY BY CREATING AN UNUSUALLY LONG DUTY DAY. I AM FILING THIS RPT BECAUSE I DISAGREE WITH THE DECISION ABOUT MY FATIGUE. FOR REF; THE SCHEDULED DUTY DAY STARTED AT XA45 AND WAS TO END AT XI28 (LCL TIME); AFTER FLYING FROM ZZZ1 TO LIH. UPON ARR IN LIH; THE CREW DESK INFORMED THE FLT ATTENDANTS THAT THEY WERE DRAFTED IMMEDIATELY AND WITHOUT REST TO WORK THE FLT BACK TO ZZZ2. AT THE TIME I WAS DRAFTED TO WORK; I WAS EXTREMELY TIRED AND FELT LOW BLOOD SUGAR. MY DECISION TO DECLARE FATIGUE WAS BASED ON MY EVALUATION OF MY HEALTH AND PROFESSIONAL ABILITIES. I HAD NOT SLEPT WELL PRIOR TO MY FLT BUT KNEW THAT AFTER THE FLT FROM ZZZ1 TO LIH THAT I WOULD HAVE REST AT MY LAYOVER HOTEL. AS THE PURSER; I AM RESPONSIBLE FOR THE SAFETY OF PAX AND FLT CREW. OUR FLT WAS DELAYED LEAVING ZZZ1. DUE TO A MECHANICAL AND WE ARRIVED LATE INTO LIH. IT WAS A FULL FLT AND ALL CREW MEMBERS HAD A FULL WORKLOAD AND I WAS ANTICIPATING QUALITY REST AT LIH.