 Which is likely true about Julia's sister given the information in the story?
I had finished reading the Chronicle , folded and put it beside me, turned and looked out the window, expecting to see the San Joaquin Valley but finding only a sea of clouds instead. So I returned my attention to the inside of the plane, to the overstuffed gray-haired woman asleep beside me, to the backs of heads in seats before me, across the aisle to other heads, and down to the blonde. I went through slips and slippers, lingerie and laundry, a jig saw puzzle and a ukulele. We'd be leaving the valley for the mountain range north of Los Angeles soon, if we hadn't left it already. I'd be a man not to be trusted, a prying man, a man literally with gimlet eyes.
 She was in on the plan with Julia's husband
 She and Julia have a very close bond  She has enough money that she is comfortable calling taxis instead of driving with visitors are in town  She was in on the plan with Julia's husband  She is flaky and can't be trusted when it comes to travel plans