I was actually driving on Kapiolani near University at about 2:15 the day of the fire as fire trucks were coming up from behind, so I took a right onto University instead of continuing on Kapiolani where trucke were coming from the opposite direction.  I actually saw the huge flames pouring out of the unit.  Literally, the flames were pouring out with thick black smoke.  At that moment, no other unit had been damaged yet except maybe the one right above.  A fire that huge must have started instantaneously.  Just speculating but to me, if it was food left on the stove or a small trash fire, I would think the resident, since she was home and apparently able-bodied, would have attempted to put it out or at least pull a fire alarm.  If she had to crawl out with just inches of air below, that means the fire was already huge....unless she was sleeping?  well, a lot of unknowns and we just have to wait for further investigation.