What's better for the child?
I'm not so sure now. Though the judge in the case ruled that the biological father, a farmer of limited means and education, was fit to serve as a parent for the girl, my thinking has evolved as I've read more about the case. The 5-year-old has obviously bonded with the foster couple. Her half-brother has been adopted by them and the little girl is very close to him. What's more, it seems that the biological father and his legal team may have fabricated some letters to prove he was interested in the girl in the eyes of the court.
I think the girl would be better served staying where she's at -- a safe home where she's cared for disinterestedly. In Cuba, yes, she would be with her biological father, but in a home and with a family she really knows nothing about. Biology isn't everything.