Most likely two wills were made. Your mother had her will, and your father had his will. Usually a will can be revoked and changed whenever desired. However, sometimes it can be argued that one's will was made on reliance of the terms of one's spouse's will; and, therefore, the wills cannot be changed. More facts are needed, and the wills need to be reviewed.
Answered on Jan 16th, 2022 at 4:39 AM