If she went this far already, then what she SHOULD have done, or should do one of these days:
Just stand still. Stand still and let the paparazzi continue to film her and take photos of her. Just stand there and wait HOW long it will take until they just stop and leave. 1 hour? 3 hours? 8 hours? Never, because they begin working shifts?
That would be true performance art, because it would provoke reflection on celebrity culture and how ridiculously absurd it actually is, and on paparazzi in particular.