I was trying to think of a woman who had government experience, somebody with class, conservative, could hold their own in a debate, would be a decent president if the need arose, etc. Michelle Bachmann came to mind. The Left hates her & tried hard to beat her when she was running for office .... a lot of the Repubs hate her because she was Tea Party. Now, would she agree to running with Trump? No telling. She’s probably TOO conservative for many. There were some potential campaign ethics issues that went away when she retired. I like her better than Haley who I liked a lot when she first took office & spoke up frequently against Obama, but my enthusiasm for her has gradually drained off - her reply to the SOTUS pretty much killed off what was left.
Michelle is a good possibility.