Estate Law Questions? Ask an Estate Lawyer.
Thank you for your question.
Would the lawyer be satisfied if you gave him the account statements and blacked out everything not related to the rental property?
Have you asked that of the lawyer?
You should be able to work out a payment plan with the lawyer.
The rental income is property of the Estate and does have to be repaid, unless the lawyer agrees that it can be deducted from your share of the Estate.
Opening an account for the Estate is one of the first steps required of an executor, and the lawyer should have told you that the day he was retained.
You can find a lot of useful information in
How to Probate an Estate in California
which is available at most County Law Libraries.
I hope this information is helpful.
If you are satisfied, please remember to rate my answer as 3 or above, otherwise my time here is not compensated.