She sold everything so she could graduate her children — twenty years later, they arrived dressed in pilot uniforms and took her to a place she never imagined.

Doña Teresa was 56 years old and a widow.

Her only children were Marco and Paolo. They lived in a humble neighborhood on the outskirts of Toluca, in the State of Mexico. The house was small, with unplastered walls and a sheet metal roof, built over years of hard work alongside her husband, who worked as a bricklayer on construction sites.

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