Trainers are commonly used in rave culture. Those platforms that are often seen with similar outfits are more used in punk culture. Imagine jumping in those, you would break every bone in your body.
Also take in consideration the fact that this woman had a hip surgery. Stop being spoiled brats. It's a rave not a fashion show.
She could wear some flats or barefoot. THe rave fashion is tacky. Swsx >>>>>>