To be honest, I think this is crap that she is making up to justify Trayvon acting like a thug and attacking Zimmerman. She wasn't smart enough to realize the implications of it.
More to the point, it's speculation of the motives and possible thought processes of what is ultimately a dead man, and therefore completely unverifiable.
The activist peter puffers are perfectly reasonable to ignore this speculation. They have nothing to gain from getting their panties in a bunch over this, and every opportunity to appear like ghoulish freaks of nature if they allow themselves to be drawn into this particular circle jerk.