Just watched that episode again last night. Of course, anything is possible, but I don't think you need to see the body drop in order to believe she was killed. Tony smacking Christopher saying "you think you're alone in this", as Christopher was telling him how he loved her is in itself proof that this murder took place. It was something Tony didn't want to do either.

I know we've been surprised before by the Sopranos, but having Adrianna "not" be dead in the end, would be too cheesy in my opinion, even though I was sorry to see her go. We'll see how it plays out.

TIS

"Mankind must put an end to war before war puts an end to mankind. War will exist until that distant day when the conscientious objector enjoys the same reputation and prestige that the warrior does today." JFK

"War is over, if you want it" - John Lennon