The 40-year-old was arrested in April after allegedly turning up outside the "30 Rock" star's NY City home, reported New York Post.
She was booked on five counts of harassment and stalking, but prosecutors filed new claims at the Manhattan Supreme Court after unearthing several e-mails, in which Sabourin reportedly threatened to launch a war of words against Baldwin if he did not contact her.
"The defendant said she was going to start a 'massive destructive war' with me. She also said that she would find me no matter what it cost her.
"She said that I could call the FBI (Federal Bureau of Investigation) and have her put in jail or I could call her and speak to her. She told me if I did not have a conversation with her, it would mean 'war' and that she was 'ready for it'," Baldwin said.
Judge Mark White also ordered Sabourin to stay away from the actor until their next court date on September 19.