Continuity mistake: When Chris shows Debbie the hammock, she removes a board and lowers her arm. When it cuts her arm is back up on the board. (00:24:55)
Continuity mistake: When Chris is being choked by Jason in the van, the window starts off all the way down and then Chris turns the handle one full circle. In the next shot it is rolled up all the way. (01:17:05)
Continuity mistake: Vera drops Shelly's wallet in the lake. She stands up and tries to reach it. Seconds later it has floated a ways from the dock but remains in the same spot until Vera goes in the water and picks it up.
Continuity mistake: When Vera is picked up by Chris, she brings no luggage with her yet throughout the movie she changes clothes and shoes.
Continuity mistake: When Rick is hoisting up the hay into the barn, and talking to Chris, he hoists up a block of hay with Chris standing on it. When Chris says "Were you talking to me?" she hangs to the left of the rope. In the next shot she hangs to the right. (00:26:25)
Continuity mistake: When Jason moves to spear Loco with the pitchfork, the prongs are curved down. But when it goes through him, the prongs are suddenly pointing upward. (00:40:25)
Revealing mistake: Toward the end of the movie, Chris runs outside to find Rick after she finds a bloody dressing gown in the tub. When she goes by the tree, Loco falls down from the branches. When he falls you can see his closed mouth open a bit as if he was smiling, even though he is dead.
Continuity mistake: When Fox takes the wallet in the store and talks with Vera, between consecutive shots her necklace changes position. (00:30:05)
Visible crew/equipment: When Shelly and Vera are getting ready to leave the store we see Shelly start the car and you can see the microphone in the windshield of the car. (00:31:35)
Continuity mistake: Harold puts the fishfood bottle down on the counter with no lid on it. However when he's eating the doughnut you can see the fishfood bottle is now on the till, with it's lid on. (00:10:55 - 00:11:40)
Continuity mistake: When Chris jumps down on Jason you can see a lamp shade lying on its side as they land on the floor. When it cuts it is suddenly lying upside down. (01:19:40)
Continuity mistake: When Ali punches the car windshield, it is clear that the whole pane of glass is smashed out, but in the next shot the pattern of the missing glass is completely different. (00:32:15)
Continuity mistake: Between shots, as Harold spit's the fish food out, the position of the figurine fisherman's wooden rod changes. (00:10:50)
Continuity mistake: When Vera asks Fox, "May I please have the wallet?" you see Vera holding the wallet unfolded. When it cuts the wallet is folded with no time for Fox to fold it. (00:30:30)
Continuity mistake: When Debbie is killed in the hammock, the knife goes through her breast. Later, when Chris pulls the knife from her, the knife is suddenly in her neck. (01:02:25 - 01:13:55)
Audio problem: When Andy says to Debbie "How do we do it in a hammock?" his mouth doesn't move to the word 'hammock.' (00:46:05)
Continuity mistake: When Harold is stabbed with the butchers knife, blood runs all down his shirt. Then when it cuts to a closer view, blood is just around the knife. (00:14:40)
Visible crew/equipment: When they get into the car you can see two of the film crew members moving reflected in the car window. (00:34:25)
Continuity mistake: After Chris wakes up in the boat, the front of the boat gets stuck in some logs. The logs change position around the front of the boat between shots. Also, hay appears on Chris's shirt after she wakes up. (01:24:50)
Continuity mistake: The magazine Debbie reads in the hammock changes - look at the back cover when she climbs into the hammock with it. When she turns a page, watch closely and look at the back cover. It has changed. (01:02:05)
Answer: The very ending of part 2 proves this, as Ginny appears again found by the police and ambulances. 1) if Jason really got her she would be dead, not alive, he wrapped around her. 2) Paul was dead, not alive and 3) as far as Jason's appearance she would not be able to stand it at first glance, so in her head she would put more human features on his face to be able to deal with it.