Amy Kasehagen would wait, recording, hiding in the bushes filming Bronson Hayter leave for work.
She would follow her and photograph her.
She broke into her house and took images of the contents of her fridge and entered her bedroom and took a photo of her bed.
She watched and stalked her, soaking up every detail, what she wore, where she went, when she got her mail.
She learnt everything she could about her.
And then finally she planned to kill her – all because Bronson Hayter was dating Kasehagen’s ex boyfriend.
Bronson Hayter after the attack. Image via Nine News.
Yesterday the Supreme Court in Adelaide heard 32-year-old Amy Kasehagen hunted down her victim "like a rabbit in a spotlight".
Kasehagen had become obsessed with Ms Hayter and had her under extensive surveillance in the months leading up the attack.
In April last year it culminated when she broke into the home of the 28-year-old in Adelaide’s beachside suburb of Glenelg and tried to kill her.
The court heard that Kasehagen had become “consumed with jealousy” reports the ABC.
Supreme Court Justice David Lovell said Kasehagen’s surveillance of Ms Hayter was chilling, including photographs of Ms Hayter’s home and car, details of her work and notes written by Kasehagen debating whether to “kill”, “knock out”, “scarf choke” or “suffocate with bag” her former partner’s girlfriend.
The court released video surveillance taken by Kasehagen.
In it Kasehagen, who suffers from an eating disorder, hoarding disorder and a borderline personality disorder, follows her victim, taking note of her day-to-day activities and narrating the scene before her.
As she walks up Ms Hayter's driveway, the 32-year-old says, ““I really don’t want him to have a valentine. That’s really cruel of me I know but he’s an absolute m----r f---er. I still love him, which is stupid of me.”
In another video she says, “Thursday night I'm assuming is when I want to do it.”
In one video she was standing outside Bronson Hayter’s house. She watches her leave for work and says “7.28 via the iPad she’s leaving for work. She’s dressed really f--king weird,”
The court also saw photographs taken by Kasehagen inside house’s interior, showing her Bronson Hayter’s bedroom and the inside of her fridge.
A photo of the inside of her victim's fridge taken by Kasehagen . Image via Nine News.
Kasehagen also wrote notes on whether she should try to kill her.
One note – a list says, “Kill Bronson - bitch deserves it”.
It then lists 'hammer', 'cuff' and 'suffocate'.
One note – a list says, “Kill Bronson - bitch deserves it”. Image via Nine News.
Another says if she were to knock the woman out, Kasehagen would “shatter her hands” and put “caustic soda in her eyes.”