The literal web translation is not real good but here is some of the additional info some of you were looking for. Toxicology was negetive = not a mule situation.

from http://noticias.uol.com.br/internacional/ultimas-noticias/2013/01/03/corpo-de-brasileira-que-morreu-em-voo-e-liberado-mas-sem-causa-da-morte-diz-tio.htm

The Brazilian Helen Leite, 25, who died during a flight from Sao Paulo to Dallas, in the United States, on the last Wednesday (2), left Brazil without presenting any symptoms of malaise, told the uncle of the young Carlos Eduardo Zaccarelli Elijah. Helen, who was of Palmital, in the interior of São Paulo, spent the end of year holidays with the family in Brazil and retook to the United States to complete an exchange of a year, which was scheduled to finish in June 2013.

According to him, the results of the first examinations, among them the toxicological, had no change. "The forecast is that the cause death is disclosed in six weeks. But, even with the result pending, the autopsy has already been released to the body of Helen can be brought to the Brazil", says.

25 years old???!!??!......odd

My friend was in her flight, sitting really close to her and she said she was asleep and woke up screaming for help. She fell down and kept screaming because she was in pain.. And died pretty quick.. So sad.

Hate to hear that.. But young people die of natural causes too.

Okay, here is something I don't understand: The flight is from Sao Paulo to Dallas, but the diversion after half of the flight is completed is to Houston for a passenger that died. Why? They're saving roughly 1/2 hour by doing this.

Hi,
Here you can find some news about this tragedy!!
http://www.allvoices.com/contributed-news/13724214-a-young-woman-dies-on-plane-from-brazil-to-united-states

The family here in Brazil is saying that she left brazil without any health problem.

http://noticias.uol.com.br/internacional/ultimas-noticias/2013/01/03/brasileira-que-morreu-durante-voo-deixou-o-pais-sem-se-queixar-de-dores.htm

Internal drug mule?

Drugs or a blood clot, it has to be one or the other. Something that does not get much coverage is the fact that young women get blood clots very easily from taking birth control pills. Of course the clot does not have to come from the pill.

We don't know what the state of the cabin was at the time she died. It could have been chaotic. I don't know but I suspect if a balloon of drugs burst in my stomach, it would get ugly pretty quick. The Captain probably took lots of input from the flight attendants. Maybe he/she even called company for advice. Their rules may state "land as soon as possible"--i.e. IAH instead of DFW.

There have been instances of healthy young adults developing deep vein thrombosis (blood clots) on long duration flights. If this blood clot dislodges and blocks a cardiac or pulmonary artery it can be fatal. An athlete died this way when returning to the UK after the Sydney Olympics.

The use of oral contraceptives can contribute to deep vein thrombosis. Just a theory.

Must be "something" because by now they know what caused her demise but aren't releasing an update. Sad.

Shouldn't there be a quarantine concern for the other passengers until cause of death is determined?

I'd say this was more than likely a drug mule situation in which an improperly-packed "balloon" burst and spilled its toxic contents in her stomach. There's a great movie where this happens, except the mule doesn't die on the plane. "Maria Full of Grace."

Maybe an unwilling mule. Signs of trauma.