Let’s not kid ourselves, it’s unlikely that she would actually do so and even if she did, it’s likely that the party would limit her ability to be politically involved afterward as punishment. Sound far-fetched? It’s happened before at the federal level with the NDP party:

http://www.cbc.ca/news/canada/thunder-bay/story/2011/11/03/tby-rafferty-long-gun-vote-reaction.html

I’m not bringing this point up as an attack on the NDP party, as this is a problem that plagues all political parties. I bring this up because I feel people should question a political system where representatives are more loyal to their parties than they are to their constituents who elected them. As you have pointed out, our current party system seems to be a perversion of the original intent of the political system. I really wish more people would take issue with elected representatives who seem more concerned with furthering their political career than representing their constituents.