My girlfriends step dad died about two years agowithout a will so everything went to his wife, my girlfriends mom. Her step brother didn't like it but didn't contest it. Then her mother died 6 months ago with a will leaving everything in a trust with my girlfriend as executor. Her step brother still didn't like it but didn't contest. Now a few days ago my girlfriend died so we reverted back to her mom's will which left her daughter exector if something happened to my girlfriend. Now the step brother is back demanding he gets what he wants or he will get the estate in probate, can he do that?