I am not sure I follow it correctly but I fail to understand how the pax in question assumed she needed a slide to descent from the wing to the ground. Having flown only on A320 over the recent months, I expect to see a slide but I can't believe she paid so much attention on an Airbus flight safety demo card.
And one more question: Does the national CAA checks the contents of the demo card? If yes how? They just look at it or they run it through a test sample of pax to see if they convey the right message?
Rwy in Sight