When she looks in the mirror, is a potential President looking back at her?
No. I get that the Republican fantasy is for a Warren run to derail Clinton or at least fatally weaken her for the general election, but it isn't happening. It's one thing for Clinton to have around a 45-25 lead in 2007 Democratic Primary polls. Clinton leading Warren 73-9 and 69-6 in 2014 is another matter.
http://pollingreport.com/wh16dem.htm
Yeah, just like McCain won in a landslide against the eventual nominee of the long drawn out 2008 Democratic primary.
OH NOES WE'RE ALL DOOMED IF SOMEONE DARES CHALLENGE HILLARY IN THE PRIMARY!!!!!!!!!!!!
The argument could be made that if Obama or Hillary had a clear path to the nomination in 2008, they could've beaten McCain by an even bigger margin.
Probably not. The primaries did very little damage, and if anything, further vetted Obama and Hillary as candidates.