Not sure how you decided what he was thinking, but when Zimmerman was told he didn't need to follow - he was heading back to his SUV when he was jumped from behind by Travon & during the scuffle on the ground, Trayvon tried to take Zimmerman's gun. That's how he got shot in the chest.
She has been told this NUMEROUS times.. but she doesn’t seem to comprehend that part of it :/ (as well as several others on these threads)