My guess.....phoney kidnap story to cover a baby sale. Flame away but beware, I expect you to mention I was right when the truth comes out.
I think you’re likely very close to right. The parents may have “owed money” to somebody in connection with drug trafficking, and the cute, healthy, readily saleable newborn baby was taken to satisfy the debt. I doubt the parents were directly in on a baby sale — there are much lower-visibility ways for an illegal immigrant couple to sell a baby for cash.