It's stupid for her to sue for the fact that she fell in because of her own obliviousness or that nobody helped her, but it's not that crazy to sue the security guards for putting it on YouTube. People have been suing other people for publishing stuff about them they didn't want published for a long time now.
My dad deals with idiots like this all the time. Recently, he represented AMC after a kid jumped off the second story of an AMC movie theatre to the first, where his friends were, and broke his arm, then decided to sue AMC claiming it was their fault because there was no sign telling him NOT to jump.