All Zimmerman had to do was return to his vehicle, which apparently he was doing or was at least occupied with finding a street sign, according to the 911 recording. And all Martin had to do was continue on to his apartment. Somebody didn’t do what they were supposed to be doing; the dialogue seems to indicate that somebody was Martin.
From the girlfriend: “Trayvon said, ‘What are you following me for,’ and the man said, ‘What are you doing here.’ Next thing I hear is somebody pushing”
Let’s add in more of the alleged dialogue, that Martin asked Zimmerman if he had a problem with Martin, and Zimmerman responded ‘no’ and Trayvon said ‘well now you do’. Allegedly.
The galpal appears to substantiate outright that Zimmerman did try dialogue - just before Martin went psycho and used Zimmerman’s head for tai kuan do practice while straddling the smaller Zimmerman, starting with trying to relocate Zimmerman’s nose into his brain. Allegedly.
From what I see so far, if Zimmerman hadn’t had a gun to protect himself, he’d likely be the dead one instead of Martin, and Martin would still have forfeited his life - behind bars.
Anything beyond ‘what are you doing here’ will never be admissible in court. She wasn't there and doesn't have a clue if it was pushing or Traytable lunging at Zimmerman.