Lori was a young girl who trained as a martial artist in the Temple of the Order of Light. The monks there were very kind to her, and they trained her extremely well to become a very formidable fighter. She became friendly with Kung Lao, who also trained at the temple. But Kung Lao was a year older, and when it was his time, he left the temple to start a life. By the time it was Lori's turn to leave, she had lost contact with Kung Lao, and didn't see him again for a long time.
Eventually Lori catches up with Kung Lao, asking him to train her to become as skilled as him. But at this time, there was a fighting contest within a traveling circus being set up in Zhu Zin, run by the notorious Edenian warrior Qali. It was a tournament, and the winner was said to receive a hefty sum of prize money. Lori jumped at the chance, not knowing that the tournament was a scheme set up by the sorcerer Quan Chi to gather new souls. Lori won the tournament (not knowing that her matches were fixed after an arrangement made between Shang Tsung and Qali in an attempt to lure Kung Lao into fighting in her place), but when Kung Lao, Siro and Taja arrived, hell broke loose and the captured souls escaped. The three Earth warriors managed to escape, while the fiery souls killed everyone inside, including Lori.
She is later seen, soulless, as part of the caravan fighters devoid of their free will.
Although Lori's enthusiastic and hardworking, she's also very ambitious, as she wanted to learn lethal moves from Kung Lao, while Kung Lao and Siro doubted her abilities as a fighter. On the other hand, she is overly confident about her ability, and wants nothing more than to prove what she's capable of in a fight.
Powers and Abilities
Lori's matches in the tournament were not shown in the series, so it is difficult to tell how she fights. However, since she was trained by the same monks as Kung Lao, it's very likely that her fighting style is similar to his. In spite of that, Kung Lao mentioned that she "wouldn't win in a real fight". This strongly implies that she's a novice at best when it comes to fighting.