I know number one, she always has a fan on stage, or several fans on stage, blowing in her face, keeping her air-rated and in a nice environment while she's heating off the stage.
Rated to withstand a shark bite short of a great white shark, the shark suit will make you pretty much invulnerable to Pinhead's dread chain attacks, and at only $7,500 dollars it's quite a steal.
It wouldn't be surprising at all to find out that the peak stress in the remaining cables on Tower 4 actually did exceed their rated strength when that first and second cable broke, even if only for an instant.