Counter Evidence: In the diary, Janelle described the crash. She described herself as being in shock. This woman does not seem to be in shock. She's just freaking out.
She was killed by the exploding engine.
Most likely true, Woman was not seen after her scene or the explosions and could be among the dead (same with Gas Man).
Think about it: almost every survivors have been credited with their actors, or somehow Lost fansites recognized what actor it was. Except for this one. My theory is that it probably is a manifestation of the Man in Black or of Jacob, and will become a show regular during the end of season 6. --Fixman 02:46, February 25, 2010 (UTC)
Hahah... really?? It's clear that this is not the case. She was only an extra.