I think she has the fantasy that Trump is impeached/resigns, then Pence is forced to name her as the new Veep, then he resigns (after all if Trump is illegitimate than so is Pence).
Keyword in your comment is “fantasy”. La-la land. Dream on Hillary. :-)
I seem to recall a fellow freeper suggesting this could be how HRC gets in: The dems win House & Senate, choose HRC for speaker, impeach Trump, Pence, oust them and HRC’s in.