This question from a new user got well received after OP clarified her intents. Unfortunately, she seems to have taken offense that we initially wondered if she was a neo-nazi troll, and never came back...
Is there any way mods can email her to gently nudge her back? Suggested email if so:
We noticed you haven't showed up on the History Stack Exchange since you've posted your question. FYI it ended up very well received by the community after an edit clarified what you were up to, and three great answers await you on the site.
More generally speaking, could SE do this automatically (does it already?) for upvoted questions with answers whose authors are no shows?
Edit: upon further investigation, it seems she has two accounts if the deleted answer to the question is anything to go by, and that she actually has come back:
The two should probably be merged if that is possible.