I don't believe you are interpreting it correctly. US is asking to extradite her. Mexican citizens can be extradited. We don't want her to be tried in Mexico. All the witnesses are here in US. She can not be deported but she can be extradited. US will have to agree to take death penalty off the table (and this was a potential death penalty case).
I am trying to understand this, so please bare with me. I should of said I believe she will not be extradited, but prosecuted in Mexico, instead of saying it is what will happen. I agree a Mexican citizen can be extradited back to the US. From my link it says it is an exception not the norm. Page three: However, like most extradition agreements, the treaty between the United States and Mexico does not obligate either party to hand over its own nationals . In recent years,
extraditions of Mexican nationals to face trial in the United States have been the exception rather than the norm . Thus, if it is determined that a suspect is a citizen of that country, an Article 4 prosecution is generally the best way to proceed .
This is from the introduction of the link I posted:
When a Mexican national commits a crime in the United States and then flees to Mexico, Texas prosecutors have two realistic options: 1) if the fugitive is an American citizen1 the prosecutor can file a request for extradition under a treaty that exists between the United States and Mexico; or 2) The prosecutor may seek prosecution of the offender in Mexico by Mexican authorities under Article 4 of the Mexican Federal Penal Code.
Also on page 17: When Mexican or other foreign nationals commit crimes in the United States and flee to their native country, they, too, should be brought to justice by the most effective legal means currently available: prosecution under Article 4 of the Mexican Federal Penal Code .
I do understand that the US is trying to have her extradited according to MSM. What I am not so sure about is if they will be successful in that or if they will have no other choice but to go with Article 4, and have her tried in Mexico.