The majority of people who have lost Facebook business pages in the way Asa & Priscilla are never able to recover them.
Priscilla's personal page - the Priscilla Plaggenburg Maass account - created all of he 5 compromised business pages. Asa created them using her account, of course, but they still fall under her account.
The Priscilla Plaggenburg Maass account is likely permanently disabled. The connection to the business pages has been severed. It's how Facebook works behind the scenes. Without that account no one can kick the hackers off of the business pages.
I think it'll come down to what the hackers did to get Priscilla's account disabled. They didn't disable it themselves. They either posted things to the account that are against Facebook terms of service so that Facebook would disable the account or they unlinked her Insta account and linked one of their own containing images that are against the rules also causing Facebook to disable the account.
If the offending material was "bad" enough that account isn't coming back ever.
Thankyou! So their YouTube is safe???