From Halopedia, the Halo wiki
Disztl was born and grew up on the planet Reach prior to its destruction by the Covenant. At some point, she became a cross-continent buggy racer, and won the Tantalus 10,000 race three times, which earned her the title of "Tantalus Terror" among her fans. In 2559, she eventually returned to Reach to help reclaim her homeworld, and assisted Blue Team in Operation: WOLFE.
During the Battle of New Mohács, Disztl was killed by an unknown assailant's spikes damaging the Warthog she was transporting John-117 and Kelly-087 in, with a spike entering near Disztl's ear and killing her instantly. 
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