When Hadden and her daughter failed to show, Feijo filed court papers on May 27 asking for their passports to be seized.
In court filings, Feijo alleged Hadden never intended to allow her daughter to see Machado and instead used the tickets to meet an online boyfriend.
Hadden's family called that claim ridiculous, but in an exchange of Facebook messages from April 16 — five weeks before her trip — Hadden voices an intention to visit the man named in the passport seizure request, a resident of the town where she's now staying.
Hadden's mother said she believes her daughter intended to visit her ex-husband because they had purchased gifts for his nieces and nephews that Shauna Hadden took with her. Linda Hadden said it's possible her daughter is dating the other man but he wasn't the sole reason for her trip.
Machado, who works as a house painter, had been expelled from the U.S. because he entered the country illegally through Mexico, his attorney confirmed.
Rafaela Santos Martins da Rosa, the federal judge overseeing the case, said she couldn't provide details because the case involves a minor and falls under secrecy laws. Brazil's federal police declined to comment. The U.S. Embassy in Brasilia would confirm only that Hadden is in Fortaleza and is receiving consular services.
U.S. Sen. Elizabeth Warren and Rep. Richard Neal, both of Massachusetts, say they've been trying to intervene in an effort to get mother and daughter back to the United States.
It's common in Brazil for officials to confiscate the passports of parents if a judge feels there is a chance that a mother or father may try to take a child out of the country without the other parent's permission.
This is not the first time that parents from Brazil and the United States have become embroiled in a custody dispute attracting international attention.