Character mistake: In jail when they're all sitting down to eat, Paulie says "c'mon boys let's eat, Freddie, Vinnie let's go" The problem is the other guy's name is Johnny Dio, not Freddie.
Goodfellas (1990)
1 character mistake - chronological order
Directed by: Martin Scorsese
Starring: Robert De Niro, Ray Liotta, Joe Pesci, Paul Sorvino, Lorraine Bracco
Revealing mistake: In the scene where Lorraine Bracco points a revolver at Ray Liotta's head, after Ray Liotta turns the tables and now points the gun at Lorraine Bracco as he gets up and walks away you can see Ray Liotta steps on Lorraine Bracco's hand and she opens her mouth wide like shes screaming but it must have been cut from the audio, as Ray walks off camera his expression changes to show that he knew he had accidentally stepped on his co-workers hand.
Tommy DeVito: I'm funny how? I mean funny like I'm a clown? I amuse you? I make you laugh? I'm here to fuckin' amuse you? What do you mean, funny? Funny how? How am I funny? (00:21:15)
Trivia: In the book Wiseguy, it is stated that even in the gangster world, discipline and order had to maintained. No one could kill anyone they wanted whenever they pleased. Dead bodies were not allowed to be haphazardly left in the streets for all to see. People who had grudges against certain individuals had to sit down with mob chiefs to get their okay to have them 'whacked'. Since Tommy killed Billy Batts and several others without permission, he sealed his own fate. There are similar cases mentioned in the book regarding loose cannons, deadbeats, and snitches and their ultimate demise. Henry put it so in the case of Stacks Edwards: "It was Jimmy who gave the order, but it was Paulie who gave Jimmy the look."
Answer: The film leaves it ambiguous...it can be interpreted either way. She may have simply been being paranoid, but the circumstances, and Jimmy's behavior, were very suspicious.