The movie issues

What I don't get is, the old lady has photos with her riding a horse and standing next to a plane "as Kate Winslet", she puts these photos out on display as soon as she boards the vessel. And yet, her granddaughter and others, don't believe she's the girl in the picture. Seems to me, the drawing was a bloody accurate depiction of Kate Winslet. Compare the pics to the drawing. Not that hard. Makes FA sense