An earlier here thread suggests that the GOP-e has already thrown iCarly down the stairs and, with the exit of Walker, are now hitching their wagon to the Rube.
The only person that's gonna take down Trump is Trump. If he starts waffling, backpedaling, apologizing, or otherwise "growing" as a candidate, his supporters will leave him in droves.
Where they will go is another question entirely.
I really dont think she has a chance