You know full well there is absolutely nothing exclusive in Julie's statement that shows Jeremy shared any plan with her
Would you like to point out any one thing to me?
Do you also accept We all know Julie is a competent liar
What
we know is that Julie's statement tell us a lot about Jeremy's plans leading up to the murders and indeed gives us an insight into how he behaved after the murders. It's not just one thing within the statements that shows Jeremy's coercing and controlling ways, it's a collection of facts. Taken in isolation it's possible to dismiss one or two incidents but there is far too much in Julie's statement to even suggest she has made it up. This is quite clearly a young women who has been lied to, coerced and controlled.
By turning Queens evidence, Julie had absolved herself therefore there was no reason to doubt what she said was anything but the truth.
Abusers of others are sly, they do everything in their power to remain under the radar however when one has survived something like this or indeed witnessed it, it's easier to spot and recognise in others.