If you wanted to commit a crime, like break into a vacant/abandoned house, near Lister who would you ask for advice? See, I think that's exactly the idea that DB had in mind...call Jersey...or the number he was known to use. For all we know she saw him and said hey, i need work done...what's your number?...
So, she takes the cell phones and calls that number...knowing it will point to Jersey but, oh no, now she has to get rid of the phones...she must say he stole her phones...he breaks into houses...I better push in the screen. I think she made a mistake by leaving the front door unlocked...All JMO, of course. Maybe, she saw him walking around the corner around midnight...