You have an attorney and you don't know why this modest estate is still open after nine years? You need an immediate meeting with your attorney for answers; if you don't get them, I would discharge the attorney and seek more competent counsel.
Obtain a copy of all documents and take them to an independent attorney for a second opinion. Generally if it is not certain who the heirs are the executor has to hire a genealogist to prepare a report and submit it to the court. This can usually be done in an accounting proceeding.