To get Hillary elected president. I'm sure she's being supported by the DNC, many RINO's, the whole Obama admin and many, many crooks embedded throughout the government, media, lobbying "industry", the courts, and various other corrupt entities.
The swamp stands to lose A LOT if someone honest like Trump takes over the government... for many, this literally will make the difference between ruin (and possible prison) and continuing their current wealthy lives of leisure. Everything is on the line for many, many people.
But that’s not going to happen. Hillary and the dems cannot steal the election back to them and they know it.
The real motive behind this is all about 2020 now.
Why was she so critical of Hillary in the general? Her Twitter feed was extremely critical. She was less hard on Trump. In fact, at one point she indicated Hillary would be a bigger threat because she could get us into a war with Russia. Why did she stay in the running? Her candidacy arguably siphoned voters from Hillary because no one voting for Stein would have voted for Trump.
I think she may regret her role in getting Trump elected. Also, we know that the Democrat Party is in shambles right now, and she may be trying to get the left to come to The Green Party. We do know that she keeps the email addresses of all the people who donate, so she is building a donor base she can reach out to for future Green Party elections.