reese witherspoon is dead?!? [cloned by an asteroid] - monsters vs. aliens theory

in the movie reese witherspoons character [susan] is LITERALLY crushed by a meteorite and given super powers. the meteor is filled with an element known as quantonium, which has strange and unusual properties. the movie shows us that susan was crushed and survived, being mutated into a giant later. but what if something far more complex and dark happened? what if she was killed, cloned, and replaced?
this theory is based around how quantonium functions in the movie when exposed to biomass [or living tissue]. the movie shows us that it can be used to alter cellular structure and even clone another living thing. now it is true the villain needed a full lab to disperse the quantonium into small enough amounts that he could make an army. but what if this was why susans clone was so large and abnormally powerful? the villain does say that she has too much in her and when the seeking robots scan they show her body having waaay more than normal. and the villain even says that he cannot remove all the quantonium from her. 
after removing the quantonium susan still looks like her old self, white hair and all. would she not revert back to her human form? unless of course she was a clone of the original susan [done after she died or via assimilation]. 
this theory works because all the clones created by the vilain via quantonium effectively retain the same memory, mind, body, and thought process as the one they were cloned from. they also seem to only have a limited prior memory capacity. and the clones are easily fooled by anyone that resembles them. 
the clones seeing anyone dessing like them as the same person works for the theory as well, because the first people susans clone would see were her family. obviosly if susan were assimilated into a clone the clone would only need her most recent memories as well. this explains why, despite being 60 feet tall, she still obsesses over her fiance rather than accpeting shes too big. her mind only remembers the most recent memories and that is her obsession of her fiance. 
susan being a clone [and the REAL reese witherspoons character being dead] makes more sense, specially considering the military considers her a monster. they know about the meteorite and obviously knew it hit her. and they probably know the REAL susan is dead [which is why they changed her name]. 
ginormicon is the only monster that DOESNT know shes a monster.