Teens struggle alone in Mexico after caravan

El Salvador migrant Xiomara Henriquez Ayala, 13, peers over the U.S. border fence from Tijuana, Mexico, Feb. 8, 2019, as Honduran migrant Josue Mejia Lucero, 17, and his sister Lucero, 25, look on while looking for a way to help Lucero and her son cross undetected. (AP Photo/Emilio Espejel)

El Salvador migrant sisters 15-year-old Milagro de Jesus Henriquez Ayala, who is pregnant, and Xiomara, 13, pose for a portrait at the Agape World Mission shelter in Tijuana, Mexico, Feb. 6, 2019. (AP Photo/Emilio Espejel)

Seventeen-year-old Honduran migrant Josue Mejia Lucero, left, smokes along with his girlfriend's sister Xiomara Henriquez Ayala, 13, outside the Agape World Mission shelter in Tijuana, Mexico, Feb. 8, 2019. (AP Photo/Emilio Espejel)

The U.S. border barrier and secondary fence are seen from Tijuana, Mexico, Jan. 31, 2019. (AP Photo/Emilio Espejel)

Teen Honduran migrant Josue Mejia Lucero climbs back over the U.S. border fence from San Diego to Tijuana, Mexico, after crossing it briefly to scout the area in an attempt to help his sister and her son reach the U.S. undetected from Tijuana, Mexico, Feb. 3, 2019. (AP Photo/Emilio Espejel)

Teen Honduran migrants Josue Mejia Lucero, his girlfriend Milagro de Jesus Henriquez Ayala, 15, and Josue's 3-year-old nephew Jefferson, look at cell phones as they lie in bed at the Agape World Mission shelter in Tijuana, Mexico, Feb. 8, 2019. (AP Photo/Emilio Espejel)

Xiomara Henriquez Ayala, 13, from El Salvador, sits on her sister Milagro's bed as they talk about their day, in a shelter for migrants on the outskirts of Tijuana, Mexico, Feb. 4, 2019. (AP Photo/Emilio Espejel)

Central American teen migrants, Milagro de Jesus Henriquez Ayala, 15, and Josue Mejia Lucero, 17, embrace at the end of a Christian religious service in the Agape World Mission shelter in Tijuana, Mexico, Feb. 8, 2019. (AP Photo/Emilio Espejel)

A man stands outside the Agape World Mission shelter, topped with a cross, in Tijuana, Mexico, Feb. 5, 2019. (AP Photo/Emilio Espejel)

Central American teen migrants, 17-year-old Josue Mejia Lucero, left, and 15-year-old Milagro, relax on their bed as Milagro's sister Xiomara, 13, jokes around in a clown mask, at the Agape World Mission shelter where they are staying in Tijuana, Mexico, Feb. 8, 2019. (AP Photo/Emilio Espejel)

EL Salvador migrant Xiomara, 13, sits atop the bunk bed she shares with 18-year-old Valeria Ramos of Honduras, at the Agape World Mission shelter in Tijuana, Mexico, Feb. 4, 2019. (AP Photo/Emilio Espejel)

Central American migrants, 17-year-old Josue Mejia Lucero, left, 15-year-old Milagro de Jesus Henriquez Ayala, who is pregnant, center, and her younger sister Xiomara,13, organize baby clothes they selected from among donated items, in their room at the Agape World Mission shelter in Tijuana, Mexico, Feb. 6, 2019. (AP Photo/Emilio Espejel)

Teddy bears lie on the floor of the dormitory where Honduran migrant Josue Mejia Lucero's 3-year-old nephew Jefferson is staying with his mother, at Agape World Mission shelter in Tijuana, Mexico, Feb. 7, 2019 photo. (AP Photo/Emilio Espejel)

A migrant from Honduras holds a bible during a Christian religious service at the Agape World Mission shelter in Tijuana, Mexico, Feb. 8, 2019. (AP Photo/Emilio Espejel)

Pregnant 15-year-old El Salvador migrant Milagro de Jesus Henriquez Ayala, is comforted by a local church member as she cries during a Christian religious service at the Agape World Mission shelter in Tijuana, Mexico, Feb. 8, 2010. (AP Photo/Emilio Espejel)

Pregnant El Salvador migrant Milagro de Jesus Henriquez Ayala, 15, left, shows her ultrasound scans to Sister Cristina of Agape World Mission, who accompanied her to get the test done at a hospital in Tijuana, Mexico, Feb. 6, 2019. (AP Photo/Emilio Espejel)

Lights twinkle at night in Tijuana, Mexico, Feb. 7, 2019. El Salvador teen migrant sisters Milagro de Jesus Henriquez Ayala and Xiomara say they are too afraid to cross the border illegally after seeing the towering wall topped with concertina wire, especially since Milagro is nearly six months pregnant. (AP Photo/Emilio Espejel)