Well, it is an example of you assuring a poster that there is "absolutely, positively" no risk - and me cautioning that there can be.
There is specific insurance offered by insurance companies for bookkeepers and accountants for a reason - and it is not because there is absolutely, positively no risk. Errors and Omissions insurance covers bookkeepers and accountants if they make a mistake or mishandle someone's financial records, causing harm to that person.
As I advised earlier in this thread, and as you apparently agree, AccountingStudent should speak to one of his professors before helping the elderly man.