Friday the 13th Part 2 (1981)

Other mistake: Right at the part where Crazy Ralph is looking in on Paul and Ginny. Ralph hears a breaking of a stick behind him. You can see Jason put the barbed wire up and over the tree. How is that possible? He would have to whip it around the tree, not over it. (00:30:20)

Paul: Ginny, put your car on the lot, okay? This place is starting to look like a Burger King. Um, where was I?
Ted: You were about to give your "Let's keep our shit together" speech.

Trivia: An actor/stuntman named Steve Dash actually played Jason in almost every scene, but was crestfallen when he found out he wouldn't be given on-screen credit for the role. Due to some studio red-tape, the actor credited for portraying Jason was Warrington Gillette, a stand-in who only appeared on-screen for a brief instance. (Gillette portrayed the "Unmasked Jason" under heavy makeup, who leaps through the window at the end of the film and is only on-screen for about 20 seconds.) Dash was understandably upset, as he put in almost all the work to create and play the character, but got no reward and was only credited as being Jason's stunt-double. When archival footage from this film was re-used in the next two installments in flashback, Dash was finally given the proper credit he deserved and was given sole credit for portraying Jason via archival footage.

Question: In the original ending, Mrs. Vorheese opens her eyes and smiles. People say that this would indicate that Jason had killed Paul. How would that indicate that he had killed Paul?