Cindy Madrid and her daughter Allison Ximena were separated in June on the border.
They became the face of the separated family controversy when the girl was recorded crying for her family at a detention center in McAllen.
Audio of the child crying was released to the website ProPublica.
The recording drew international criticism of President Trump's zero tolerance immigration policy that separated children from their parents who were caught crossing into the United States illegally.
Allison's mother said she fled El Salvador and crossed the border, seeking asylum. When they were separated, Allison was sent hundreds of miles away to Arizona.
Cindy heard the recording and recognized her daughter's voice. Her attorney Thelma Garcia says they both underwent DNA tests to confirm that they are mother and child.
EXCLUSIVE PHOTO: This is Cindy Madrid and her daughter Alisson Ximena. They were just reunited at IAH. Ximena was so famously heard in an audio recording pleading for her mother who was being held hundreds of miles away in an immigration detention facility in McAllen. pic.twitter.com/onLtGmo61d— Foti Kallergis (@FotiABC13) July 13, 2018
They were reunited Friday at Bush Airport. They will stay in Houston for now.
"We've got an uphill battle. It is going to be complicated. It is going to be difficult. We are hoping to put all our resources and work hard on her case," Garcia said.
According to the latest reunification numbers from the Justice Department, 57 children have been reunited with their families.
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