Prior to being part of the Shrike team, Maheria was orphaned at at early age, losing her parents and brother in an accident.
In the events leading to the battle of Arti Gibraltar, she gives Uso Ewin a lift to where the parts of the Victory Gundam were hidden prior. During their brief conversation, Maheria expresses slight envy over Uso's parents still being alive. She gives Uso a kiss in the forehead before he disembarks and tells him to "be a good boy" if he ever meets them again.
Maheria would later return to the Arti Gibraltar airstrip to escort their carrier craft into a hangar before Zanscare forces under Fuala Griffon's command closes in on them.
Eager to avenge former squad leader Helen Jackson's death, she applies lipstick on her face in the same manner as war paint. Her overzealousness however, leads her to prematurely brandish her LM111E02 Gun-EZ's rifle (going against comrade Junko Jenko's lead), consequently falling for the enemy's bluff and giving them photographic evidence that League Militaire (supposedly) started the conflict in neutral territory.
This same brand of recklessness also became her undoing, as her unit was severely damaged in battle with the cockpit exploding from within.