I'll keep my adopted family in my life but i'm DONE carrying the name of my Adopted Family I Plan to change it

When my ex wife found her biological mother she went to the judge to change it from her adoptive name to her mother's name, her mother said no, that if my ex wife and her little brother had not been with her and their father, they would have been able to run from the law faster and not get caught, a very long story. My ex wife was only three years old at the time and her little brother was a year and a half old.