Mr. Garner is correct. In order for your brother to act as executor under the will, your brother needs to file the will with the Probate Court. At that point the will is a public document and you can request a copy from the clerk at the Probate Court.
Ms. Marsh strongly advises the questioner to consult with an attorney to thoroughly review her particular circumstances and to provide advice tailored to her specific circumstances.
Disclaimer. Ms. Marsh is an attorney licensed to practice in California. The information posted above is for general information, does not constitute professional legal advice, and does not create an attorney client relationship.