How useful is it to call her African American, and if she did emigrate here, would she even identify with the term? The answer to both those questions is no. As with most other recent immigrants, they are addressed by their nation of origin, as in Morrocan American, Chinese American etc etc. By calling all immigrants who come here from Africa "African American" you are grouping them all together as if they are one monolithic cultural/racial block. A Nigerian is different from a Kenyan, an Algeriaing is differnt from someone from the Congo. Secondly, she would not identify as "African American", but as Morrocan.