Hellfire appeared to be a fan of risky situations, as she was one of the few pilots that still flew around after Mental had nearly overrun Earth. She didn't wear a standard EDF flight suit; instead, she wore a stained white tank-top and a pair of jeans.
At the end of The Silent Riddler, she appeared in an UH-60 Black Hawk in order to fly Sam to Karnak so that he could start activating the power generators for the Time-Lock. On the way, Sam and Hellfire flirted, suggesting that there was a thing between them. When she dropped Sam off at Karnak, she asked if he needs any help, but he states that he didn't need any help. She then flew back to headquarters.
Much later, after Sam traveled through The Lost Temples of Nubia, he managed to contact HQ, but Hellfire answers. She is relieved to know that Sam is alive, but this time she was in trouble; she told Sam that headquarters was overrun by a sneak attack from Mental's forces.
Quinn had been killed and Charlie Team were out of commission. She also told Sam that he should find a safe place and hole up, if anyone survives, they will look for him. Whilst she's talking to him, a Gnaar sneaks up on her from a roof and presumably kills her. Despite Hellfire's advice, Sam decided to take Team Charlie's mission on his own and fight his way to the Time-Lock.
Even if Hellfire did survive her encounter with the Gnaar, she would have died regardless when the Earth was destroyed by the Moon.
- Of all the pilots in Serious Sam 3: BFE, she was the only one that was not killed by having her helicopter shot down by Mental's Horde.