That's a tough one for the prosecution, provided the defense exploits it properly, and the whole case may fall to pieces around that.
You are on the phone with someone who says they're being followed, says they are scared, you hear challenging words exchanged, you hear what sounds like a scuffle and the phone goes dead. Then you never call back and don't inform anyone else until well after the fact?
That sounds so strange you have to wonder why. Did Martin say something to her about what he was doing or going to do that made her fearful of calling the police or a friend or someone? Being unconcerned and incurious doesn't sound very plausible.
Ummm...why didn’t Martin just call the police if he felt threatened?
I do believe that DeeDee did say she attempted to call Trayvon back and got no response, but I don't have the evidence for that. As far as calling anyone else, I don't know.