You cannot pick and choose like you do! I am surprised you even go into this phonecall, Mugsie really incriminates herself through it if you take it at face value (which I don´t, really, it makes no sense at all what she says)!!
Julie stated that Jeremy had been telling her about plans to kill his family for close to a year. He called her about 10 in the evening to tell her: "Tonight is the night, it´s now or never." To which Julie reacts as follows: A sigh of relief, he was not going through with it after all (
??)
Then later - allegedly after he had killed his family - he called again to say that "everything is going well, something is wrong at the farm (again: 
), to which Julie reacts as follows: "Jeremy, go back to bed." And then went to sleep herself.
What a load of BS!! But of course you can explain it away as you do everything with totally and utterly illogical and unlikely scenarios put forward as fact.
I agree Alias, unless Julie was in on the plan before that evening, the phone calls as she reports them make no sense whatsoever.
Steve sometimes has said it was just mentioned a few times over the year, so how would she know what he was speaking of that night?
If he had spoken of it continually and she did know what he was hinting at then she was either in on it hoping to be a beneficiary or she knew all about it and stood back while he went ahead and killed them all, which makes her appear like an accessory.
Neither of these behaviours are anything to be proud of except she appears to admit them without embarrassment???
Why did Julie tell him to go back to sleep it's a bizarre reaction to someone who has just insinuated he has shot 5 members of his family imo.