If the Senate turns blue she won't get impeached. Even if it isn't, the impeachment process is very hard and long, and Republicans are gonna have to decide whether it's smart to wage another 4 year war on a Democrat, create gridlock (which this would cause), and possibly bring rise to another demagogue, or just wait the 4 years out and try and nominate a decent, moderate Libertarian type for 2020 (Bill Weld comes to mind, he came out supporting Clinton today).
If progressive legislation comes to her desk, I can't see her vetoing it. That would alienate almost the entire Democratic base an