They are their own trustees, they can pay themselves whatever they want out of the charity funds. It's a common problem with all charities, a lot of the donations you think are going to do real work is actually used to pay the salaries and expenses of those that own/direct the charity.
Oh, that complicates things a lot.
She performs stunts in order to raise funds for a charity from which she can take an income of her choosing before using the money charitably.
This could be the most controversial yet, and is definitely going to end badly for Amy.