I am looking for a girl named Tonya?

I am looking for a girl named Tonya, who was searching for Ernest T. Roethlisberger ( my father) on ancestry.com. I belive she may have lived in Ohio or Indiana. Her email used to be tsa2003@aol.com, but it is no longer in service. I believe her full name is Tonya Shaya and last name starts with an A. I don't know anything else about her and need any info that may help. I really need to find her as this could poss. be my half sister. Thanks