The six-year-old girl on the other end of the line tells Alexa she fears they will never be together again. In another 15-minute phone call, she questions if Alexa still loves her. She asks Alexa to pick her up from the family she’s staying with in New York. Alexa hears the girl say the words in Spanish: “You are my mom, I want to be with you.”

Alexa wishes she could go get her. But Alexa’s locked up 2,400 miles away, at an immigration detention center in Arizona.

A federal judge in San Diego ordered the Trump administration in the summer of 2018 to reunite families and stop separating most parents and children. But the court order does not apply to non-parents, and the administration keeps separating people like Alexa – aunts, grandparents or older siblings who commonly step in as guardians without formal paperwork – from the children they’re traveling with, without any procedure to reunite them.

Michelle Brané, director of migrant rights and justice at the Women’s Refugee Commission, says when these caregivers are separated from children at the border, it’s not even “necessarily noted in the file anywhere that this separation occurred or who the adult is that brought the child in”.