It really doesn't make sense to me either although I won't say that it isn't a hope of mine. I wish this were the case. But I don't think that bio dad is very old and living in Mexico is hard enough and with kids, it would be even harder. He may also have a girlfriend who might not like the idea of raising someone else's child. I don't know much of the story on this guy except that he is going to school in Mexico and that he can't come back because "he doesn't have enough money" which also makes me think he was deported although it is possible that he just doesn't have money to apply for the visa. He did not think Dulce was his but now all of a sudden decides he wants to care for her full time, rip her away from her family, her friends and her education? Yeah I am not buying it either.
Noema said in one of the press conferences that he returned to Mexico to attend school but he may have been deported she isn’t sure.