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. 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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