I'll apologise up front, because I know this will rile some people, but...
If she got a £15k advance on book one, and £150k in royalties, an advance of £50k on book two (average for the genre according to an easy Google search) AND a staggering £16k in advertising fees a month... WHY would she need to touch the PayPal money?
Now, I absolutely agree the PayPal accounts MUST be made public, and I'd have gone for tooth implants over a brace, but outside of that I've decided it's none of my business what she spends, where she eats or where her kid sleeps