Julies mother Mary Mugford testified this in court. As previously said.
Jeremy called Mary 'mummy' & offered her Junes car after the deaths. Jeremy told Mary that June was thinking of changing her will to give the twins more.
Adam dear, shall we look at that from another direction. Mary SAID Jeremy told her. If we return to your seemingly churlish dismissal of seeing grandchildren because of worry over mental state, MOST parents would lie through their teeth to protect their children. I VERY much doubt that Mary would have wished to see her daughter branded a liar and no one could prove, like much else said by Mugfords, what was actually said, because there, conveniently, was usually no one else there to verify it.