When filling out those nationality boxes she truly enjoys marking "African."
I have a friend from Namibia. Same with her. She is currently working towards getting US citizenship. Once she does, I will be able to introduce her as my African-American friend.
I have a business acquaintance who is South African born who, upon getting his American citizenship while in college his junior year, promptly marched into the financial aid office and filled out the forms for an African-American scholarship. And got a full ride his senior year.
Apparently the black admin in the financial aid office from whom he got the initial application was not amused.