By the power of truth, I, while living, have conquered the universe.
No because if you read the passage properly you'd know that 'Lodamee killed Sheila, the Spartan-II protecting Halsey during the battle of Miridem in 2549 - 3 years before the battle of Reach. Halsey personally refers to this incident again in Ghosts of Onyx when identifying Kurt, she says that she was there when Sheila died protecting her.
[Edited on 04.28.2012 9:55 AM PDT]