Let’s just say nobody had ever found out she was “lying;” wouldn’t she be?, I think is the correct question. The most objective criteria for blackness we have is heritage, but you can’t actually tell heritage at a glance, even though we live in a society that tends to believe that. Self identification ends up the ultimate authority exactly because there don’t really exist objective criteria to refute it. It’s how we know that trans people will always exist, regardless of the status of social acceptance. Any given person can fool the criteria of social acceptance through their own cunning or through their genuine pervasive belief that they belong to the group in question. Everything else follows. It’s like the corpus delecta of personal identity, except for there never really is a corpus, just someone’s idea of what a corpus obviously is which everyone obviously already knows. In fact they don’t, or they’d never have been fooled by Ms Dolezal in the first place.