PORT-AU-PRINCE, Haiti — A 16-year-old girl pulled from the rubble more than two weeks after a deadly earthquake was in stable condition today, able to eat yogurt and mashed vegetables to the surprise of doctors, who said her survival was medically inexplicable.

Hundreds of thousands of other survivors hoped for a breakthrough of another kind — the delivery of badly needed food aid.

Key players in the Haiti earthquake relief effort, in what may prove to be a pivotal meeting Wednesday, decided to better coordinate by dividing up the shattered capital, giving each responsibility for handing out food in certain areas.

Food distribution thus far has often been marked by poor coordination, vast gaps in coverage, and desperate, unruly lines of needy people in which young men at times shoved aside the women and weak and took their food.

"These things should be done in a systematic way, not a random way," Dr. Eddy Delalue, who runs a Haitian relief group, Operation Hope, said of the emergency food program. "It's survival of the fittest: The strongest guy gets it."

The rescue Wednesday of teenager Darlene Etienne from a collapsed home near St. Gerard University, 15 days after Haiti's great quake killed an estimated 200,000 people, was the first such recovery since Saturday, when French rescuers extricated a man from the ruins of a hotel grocery store.