Really - this is all on her.
All she needs to do is produce the evidence that the monies she has grifted been donated have gone to the cause they were specifically donated for, or at worst, to another similar cause (eg - if for Trussell Trust, and due to some unknown problem couldn't be sent there, then a similar foodbank/ homeless charity/ good cause has benefitted).
That the money donated to sue "30p Lee" (not that I have any time for him!) - a lawsuit which never materialised - was either returned or donated to charity.
That she has refunded the Patreon accounts which have requested refunds.
She claims that all is above board. This should be easy to prove, Even if she doesn't keep records, these organisations do - they are legally obligated to do so, and large donations from a single source would show up.
She claims to pay herself only a "tiny, tiny" wage - but is she limited company? Does she claim a dividend? (These are genuine questions - I honestly and truly don't know but would be interested to find out.)
If she wants the "harassment" (aka requests for the truth) to stop, all she has to do is be transparent about her incomings and outgoings.
She seem to have umpteen notebooks of appalling recipes she has devised, and frequently shows her shopping lists (with prices) when bragging about feeding 2 adults, & a teenager 3 meals a day plus snacks, not to mention the numerous friends and family that she frequently entertains - I can't believe that she hasn't kept any accounts.