Some odd/suspicious details:

"Mother" wearing Elsa t-shirt (several sizes too small) - signal to potential customers?

"Mother" bears no physical resemblance to children

"Mother's" rough grip of child's wrist in both photos - distinctly unmaternal (although what kind of mother drags her young children 2000 miles across Central America)

Child aged at least 4 or 5 wearing diapers

Child's fingers stuck in wiffle ball - some form of punishment?

"Mother" wearing orange wristband (but not children)

https://i.imgur.com/UgNmi0Z.jpg