She should correct him, that Cassian isn't there. Instead she murmurs, "Yeah", and hangs up. Things like thank you or please either don't occur to her or don't seem to fit the moment.

When he and BB-8 cross town to her home, the door is open and the light in the kitchen is on, he'll find Jyn sitting on the kitchen counter absently stirring a cup of tea, kettle still steaming on the stove, cabinet still open. Everything sort of half completed.

The phone is still on the floor behind the couch.