The whole chain: how she came to own the bakery, what it was worth, how it was sold, what was paid off at closing, and where the proceeds went. Corporate records, valuations, the purchase agreement, tax returns, the closing statement and bank records showing the money arriving and leaving.
Reconstruct the ownership, not just the sale
Proving lawful source means tracing capital back far enough to satisfy an adjudicator about its origin, which for a business built over years reaches well before the sale. Rosalind should expect to produce incorporation records and share registers showing how she acquired her interest, any documents recording capital she contributed at the outset, financial statements and tax returns for several years demonstrating the bakery generated real income, the agreement of purchase and sale with its price allocation, evidence of any loans discharged on closing, the lawyer's statement of adjustments, and bank records showing the net proceeds credited and later transferred to the investment.
Where records have been lost, secondary evidence such as lender confirmations, corporate registry extracts or the accountant's working files can fill gaps. Undocumented cash and informal family transfers are the usual weak points and should be identified early.