Cheryl briefly and abruptly visualizes herself shoving Beth's head underwater and trying to drown her.
When a friend of Beth's pointedly acts suspicious of Cheryl as a criminal, Cheryl carries on a casual conversation with her while picturing herself grabbing a pair of scissors and stabbing her repeatedly; the first time shows thin streams of blood on the woman's hands.
*SPOILERS* When Cheryl becomes convinced that a friend of Kevin's set her up, she sets out to hurt him. We see him driving a tractor, then the scene cuts to Kevin finding him lying dead on the ground with scrapes and blood on his face.
Cheryl strangles Beth with a belt in an awful struggle; the movie shows this scene twice. When Kevin later accuses Cheryl of killing her and rebuffs her, she tries unsuccessfully to attack him with a knife. He also briefly takes her by the throat when pushing her to confess.
*END SPOILERS*