I just looked at it on Youtube. She's impressive.

Your big worry is that to many people might be looking at Hillary, deciding they don't muxch like her, and thinking Trump is a no hoper, so they might stay home in November, or put in a protest vote - which could mean Trump actually winning, and would definitely hit the hopes of left Democrats getting in across the country.

Having Elizabeth upfront in the campaign, preferably as VP candidate would be a way of addressing that.

"Two women on the slate might be pushing things too far" - you've had two men every time for 240 years, and it hasn't worked out too well a lot of the time. And the two are pretty dramatically different. If Hillary doesn't pick her the suspicion might be she was scared of being outshone by her.