the way i see it, the minute you witness or have involvement of someone elses death you are pretty much a murderer if you choose to hide it with malicious intent
she could at any point have contacted authorities to let them know what had gone on even when they fled. or even when they were initially arrested, but she chose to drag it on this long and wait for craig to take the rap.
i think she needs to realise how fucking lucky she is cos from my experience, people like her get a baaaaad time in jail for 1) being a celebrity 2) being a good looking girl and 3)for getting her man to kill a girl she had a problem with.