The executor is both wrong and right. She is right in that there are no specified materials that she must regularly provide. She is wrong in that she has a fiduciary duty to the beneficiaries, and if they believe that she is either wasting money or taking money/assets out for her own benefit or the benefit of her family, friends, business associates, etc., the beneficiaries have the right to file a legal action seeking an "accounting": i.e. requiring her to, in court, account for her actions and expenditures/payments. If a legal action is filed, she will have to provide detail and back-up as to what she has done and spent. If you want to bring such an action, speak with an attorney: this type  of action is more procedurally complex than, say, suing someone over an unpaid bill or fender bender in small claims court, and having the assistance of counsel is recommended.