I'm looking for my grandaughter?

My grandaughter Dana was born in Prescott Arizona in November of 1993. In 1998 she was put up for adoption by her mother. I tried with everything in my power to to be able to adopt her. Her birth name was Dana Elaine Crowder-Matthews. I have her listed on Myspace.com. How can I find her? Who can help me? I am very sick and I have to find her and make sure she knows that her grandpa and I loved her very much.