What disease? She poisoned her self. Did you even READ it?
Interjecting here, but did YOU read it? The article says she has urea cycle disorder.
"Meegan, from Mandurah in Western Australia, had a genetic disorder that stopped her body breaking down the protein she was eating."
"Urea cycle disorder, which affects one in 8,000 people, caused a build-up of ammonia in her blood and fluid on her brain, reports Perth Now."