MAPASTEPEC, Mexico (AP) — Madison Mendoza, her feet aching and her face burned by the sun, wept as she said she had nothing to feed her 2-year-old son who she’d brought with her on the long trek toward the United States.

Mendoza, 22, said an aunt in Honduras had convinced her to join the migrant caravan, which she did two weeks ago in the capital of Tegucigalpa. The aunt said she’d have no problems, that people along the route in Mexico would help as they did for a large caravan that moved through the area in October.

But this time, the help did not come. The outpouring of aid that once greeted Central American migrants as they trekked in caravans through southern Mexico has been drying up. Hungrier, advancing slowly or not at all, and hounded by unhelpful local officials, frustration is growing among the 5,000 to 8,000 migrants in the southern state of Chiapas.