If you believe her defence claim:
She did not phone her mum, the ex the police nor a taxi when things "calmed down" after escaping the car and the assault.
She told her friend he intended to kidnap her and her friend and then took a knife off the friend and got back into the car and decided to sit in the front.
After the stabbing she called her ex and a taxi while he was bleeding out and left him to be found by a passerby.
But here is a question :
Do you believe that her friend came to her house with her boyfriend for a birthday party and after drinking for a while but before they left to go clubbing went into her friends kitchen and stole a long blade knife?