Isn't the reason they are thinking about de-selecting her more to do with the whole imposed list thing? Which is, i believe, either a. a plan by that nice Mr Cameron to get more minorities (such as women!) past the dinosaurs at a local level or b. a cunning way to increase central control of the local parties, depending on your perspective?
I must admit, I have not been following this quite as avidly as I might, since I am most unlikely to either vote for or join the Conservative Party.