Assuming the buyer can make the monthly payments, but does not have more than 3% for a downpayment.
Buy the house and make the repairs out of your pocket. Now sell the house to your buyer on a contract for deed for 3% down, at a price about 10% - 15% higher than your cost basis, at an interest rate about 2% points higher than your underlying loan rate, and set the term for 24 months.
Hopefully, your buyer will be able to do a rate and term refinance in 24 months and roll in closing costs so she can come to the settlement table with nothing down, nothing out of pocket.
For example, assume that your puchase price plus repairs come to $100K. You financed the purchase with an $80K loan at 6.5% for 30 years. Sell the property on a 24 month contract for deed for $115K. The buyer gives you $3500 down and you “finance” $111,500 at 8% to 8.5%, on a 30-year amortization, balloon in 24 months.