I have seen fics where part of the point of having Clark ram it was to get rid of Superman - if hitting the asteroid doesn't do it, maybe the kryptonite laced return air tank will... Forget whose fic that was though... I think that's Curiosity... The Continuing Saga by ML Thompson 
If she had to move heaven and Earth, perhaps come back to haunt Perry and explain the story after they'd killed her, she would do it.
Waking a Miracle by Aria
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