Can the mother of a pregnant 16-year-old have the 19-year-old father of the baby prosecuted in Georgia?

The age of consent is 16, that being the case statutory rape or sexual misconduct with a minor charges would not apply unless there are mitigating circumstances. Some examples are; if the adult male was in a position of authority over the minor female or lived in the same household as the minor female, if there is proof of intimidation or coercion rather than the relationship being consensual, and so forth. There are other laws that might apply, but the parents of the minor would need to discuss the specific circumstances with the prosecutor's office not the local law enforcement agency. There is also civil actions available to the pregnant minor and her parents those of which would need to be discussed with a private attorney or legal aid counsel.