I really have serious doubts whether she would go and create history. Her agenda, the unemployment factor, which is being handled better by third popular party in the race ( I dunno the name, you see I'm just 23 and not into politics so much, more into s/w) has predicted a lot of policies which she cannot defend or ignore. Shroeder's policies cannot be dumped just like that and there's the factor of the globalisation.
Unless she has made some drastically acceptable- without-the-blink-of-an-eye announcements in the near past or in the near future to increase her share of popularity, she'll have to share.
Personally though, I'd love it if she hands Schroeder's the big kick without having to share power.