If I remember it right, Leslie is the one JA talked with in Utah about how she could picture her own and Travis's children playing together someday. The way I understand this is Leslie was aware JA was coming to Utah. JA was late and maybe she tried to call JA but missy's phone was turned off for awhile post murder so Leslie couldn't reach her. Maybe out of concern Leslie called Travis to see if he'd heard from her. He obviously didn't answer so she left the message. Maybe shortly thereafter, JA either turned her phone back on and got another call from Leslie, or her phone was never off and she saw she missed a call from Leslie. So she calls Leslie and Leslie says..."oh wow, well I just left a message with Travis about being worried about you. Maybe you should call him and let him know you're alright...." not sure if this makes sense??