Former co-worker Elizabeth Thompson called her "Mother Teresa." "She would be there for four hours on her own time to make sure when that passenger got to where he was going, everything was smooth sailing for them,” Thompson said. When Thompson's mother became ill, Munoz volunteered to work her shifts -- for three months, Thompson said. Munoz moved here with her family from Mexico City looking for a better life, and found it in Fort Worth, where she worked at American for 25 years. "I remember mom meeting passengers on the phone who were stranded or who were traveling to a funeral, especially a lot of immigrant families, and she would bring them to stay at our house,” her daughter Dee Lara said.