Well we haven't seen HRC in months. A body double was at the Inauguration and I'm 99% sure either the same one or a different one voted for her at the electoral college. The woman in that picture had a different hairline and her eyes/eyebrows looked different. It's harder to pick them out with the giant masks they wear, but when you know what to look for it makes it easier.

Just because she tweets stuff or is "interviewed" doesn't mean anything. Anyone could be on her twitter account. And the same with an interview. Could be a body double/phone interview/written interview or the author just made the whole thing up.