ISO Female, born 1964-1965 in Omaha (possibly Booth?), mixed African American and Caucasian

I recently learned that my grandmother, Sharon Turpin (maiden name, married name Smith and Olson) had a daughter when she was just out of high school in 1964 or 1965 in Omaha, Nebraska. The daughter would be half African American, half Caucasian. I have no other information as my grandmother has passed away and the other family members have no information either. She may live in central Iowa as we are from Des Moines.