Ha Tinh, Vietnam (CNN) Nguyen Thi Phong and Pham Van Thin live in a small house in Nghen, a town in Vietnam's Ha Tinh province. It has a corrugated metal roof, propped up on loose bricks, and a Vietnamese flag flies outside.

That journey ended in tragedy. Pham Thi Tra My is believed to be among the 39 people found dead in a refrigerated lorry trailer at an industrial park in Grays, Essex, on Wednesday.

Pham Thi Tra My is believed to be among the 39 people found dead in the refrigerated lorry trailer.

She texted her parents late on Tuesday night, UK time, when the trailer was in transit to the English port of Purfleet, according to Maritime tables seen by CNN.

"I'm sorry Dad and Mom. The way I went overseas was not successful," the 26-year-old wrote. "Mom, I love Dad and you so much. I'm dying because I can't breathe. Nghen, Can Loc, Ha Tinh, Vietnam. Mom, I am so sorry, Mom."

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