While some at-home DNA test users get confirmation about who they are, others end up questioning their whole identity.One email notification led Carla Barnes to question her whole identity and try to find it again. Barnes expected the email — even looked forward to it — but it delivered an unexpected shock. The email held the results of her at-home DNA test. It revealed her ethnicity, a list of her DNA relatives, and a secret her mother kept from her for her entire life. When she opened her r...