There just doesn't seem to be any way to contact either Olivia or her husband, Aaron. I have left messages here and on the YouTube message board in hope to get hold of the family and find out if this poor woman has indeed died from starvation, or, nearly as bad, ate steak as her first re-feeding.
When I posted in that YT forum, someone had responded to my post about Olivia and her marathon fasting. He or she just told me to contact the authorities, but I have no idea where she lives. It's likely in the US, but that doesn't exactly narrow it down.
Today it's August 5th and still no word from any of them.