As I remember it, the cops called them in advance to say they were going to arrest him. Call like maybe the police came to the gate and were denied entrance. Smuganna went together to the police department for the official arrest.
Heather doesn't expect Noella to be invited back. She condescendingly said something to the effect of, "IF I ever see you again..." Emphasis definitely placed on the If.
There's another Daxton walking the planet. One Daxton Hill was drafted by the Cincinnati Bengals in the NFL draft. He didn't go to an SEC school (he went to Michigan), so I don't think Amy got the name from him.